<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" > <channel> <title>Tele Vue Optics, Inc. Blog</title> <atom:link href="https://televue.com/televueopticstalk/feed/" rel="self" type="application/rss+xml" /> <link>https://televue.com/televueopticstalk</link> <description>Tele Vue Optics Blog!</description> <lastBuildDate>Fri, 08 Nov 2024 21:15:40 +0000</lastBuildDate> <language>en-US</language> <sy:updatePeriod> hourly </sy:updatePeriod> <sy:updateFrequency> 1 </sy:updateFrequency> <item> <title>The Apparition of C/2023 A3 (Tsuchinshan–ATLAS)</title> <link>https://televue.com/televueopticstalk/2024/11/08/the-apparition-of-c-2023-a3-tsuchinshan-atlas/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Fri, 08 Nov 2024 21:15:32 +0000</pubDate> <category><![CDATA[Astro Image]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[C/2023A3]]></category> <category><![CDATA[comet]]></category> <category><![CDATA[Tsuchinshan–ATLAS]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81686</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/11/08/the-apparition-of-c-2023-a3-tsuchinshan-atlas/" title="The Apparition of C/2023 A3 (Tsuchinshan–ATLAS)" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" fetchpriority="high" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3.jpg 1080w" sizes="(max-width: 700px) 100vw, 700px" /></a>Comet C/2023 A3 (Tsuchinshan–ATLAS) did not become a daylight comet as some had predicted — nevertheless the dirty-snowball put on a fine show in the twilight skies. ]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/11/08/the-apparition-of-c-2023-a3-tsuchinshan-atlas/" title="The Apparition of C/2023 A3 (Tsuchinshan–ATLAS)" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageCometC2023A3.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p>Comet C/2023 A3 (Tsuchinshan–ATLAS) did not become a daylight comet as some had predicted — nevertheless the dirty-snowball put on a fine show in the twilight skies. This visitor from the Oort Cloud of icy bodies at the edge of the solar system was the third comet discovered in January 2023 (hence the designation C/2023 A3). It was closest to the Sun at perihelion on September 27, 2024 at a distance of 0.39 AU and magnitude of at least -4 — though very few saw or imaged it.</p> <p>This gallery of Comet C/2023 A3 images contains views of the comet from late September to early November and highlights the changing nature of the object.</p> <p><strong>September: Pre-Dawn Comet</strong><br>Most of the images on this blog were taken when the comet transitioned into the evening sky after it rounded the Sun and began the long journey back to the Oort cloud. This gave imagers the luxury of setting up their gear in the warmth of daylight and the time to spot the comet in deepening twilight and start experimenting with exposures. The image below, however, was taken by a hardier soul: someone that camped out at the frigid altitude of 11,700 feet elevation to catch the comet while still in the dawn sky. Jeremy Evans had to race the Sun to image the comet — just a few degrees above the horizon — as the twilight reached ever higher to erase the fragile contrast between the comet and sky. “This was a challenge to catch” says Jeremy, “fortunately it appeared above the clouds just before the sun washed it out.”</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px.jpg" target="_blank" rel="noreferrer noopener"><img decoding="async" width="1080" height="722" src="https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px.jpg" alt="" class="wp-image-81684" style="width:1080px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px-598x400.jpg 598w, https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px-150x100.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/J.-Evans-Comet-c2023-a3-30Sept2024-Morning-w1080px-768x513.jpg 768w" sizes="(max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.instagram.com/p/DAj6CaOyFru/" target="_blank" rel="noopener">Comet C/2023 A3 (Tsuchinshan-ATLAS) in the dawn sky </a> by Instagram user <a href="https://www.instagram.com/jeremyevansphotography/" target="_blank" rel="noopener">Jeremy Evans </a>. All rights reserved. Used by permission. The <a href="http://bit.ly/TVO101isMobile" data-type="link" data-id="http://bit.ly/TVO101isMobile" target="_blank" rel="noreferrer noopener">Tele Vue-NP101is </a>APO Nagler-Petzval Refractor was fitted with Large Field Corrector (LCL-1069) and ZWO ASI2600MC, APS-C sized, cooled color camera. Focusing was done with ZWO EAF electronic focuser. The entire setup was mounted to a Losmandy equatorial mount. Exposure was 3 seconds at medium gain taken at 11,700 feet elevation, with perfect weather and dark Bortle 1 skies on Sept. 30, 2024.</figcaption></figure> <p><strong>Mid-October: Anti-Tail and Comet / Cluster Conjunction</strong><br>Bill Fallon caught the comet showing an anti-tail as it sailed by globular cluster M5 in Serpens. The comet had crossed the plane of the Earth’s orbit on October 14th which made visible debris too large to be blown away by the solar wind. This debris appeared from Earth as an anti-tail extending from the head of the comet. Bill’s image was an AstroBin “Top Pick” nomination.</p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px.jpg" target="_blank" rel="noreferrer noopener"><img decoding="async" width="1080" height="717" src="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px.jpg" alt="" class="wp-image-81682" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px-603x400.jpg 603w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px-150x100.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_passing_M5_w1080px-768x510.jpg 768w" sizes="(max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/iba1z2/" target="_blank" rel="noopener">C/2023 A3 (Tsuchinshan-ATLAS) passing M5</a> by AstroBin user <a href="https://www.astrobin.com/users/wjf56/" target="_blank" rel="noopener">Bill Fallon</a>. All rights reserved. Used by permission. <a href="http://bit.ly/TVONP127isMobile_" data-type="link" data-id="http://bit.ly/TVONP127isMobile_" target="_blank" rel="noreferrer noopener">Tele Vue-NP127is</a> APO Nagler-Petzval Refractor with 0.8x reducer and FLI Atlas focuser was used for imaging with QHYCCD QHY268 M camera. All hardware carried on Software Bisque Paramount MYT mount. Imaged through Astronomik Type 2c 50mm red, green and Blue filters with subframes of 20×30″ for each filter. Total integration time on the comet was 30-min. Software used was Pleiades Astrophoto PixInsight. Imaged Oct. 15, 2024 from Temecula, CA.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>A Tail of Three Comet Tails</strong></p> <figure class="wp-block-image alignright size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Comet_Anti_tail_wikimedia_CC-BY-SA-3.0.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="758" height="600" src="https://televue.com/televueopticstalk/wp-content/uploads/Comet_Anti_tail_wikimedia_CC-BY-SA-3.0.gif" alt="" class="wp-image-79422" style="width:379px;height:300px"/></a><figcaption class="wp-element-caption">Three tails of a comet. Credit: Roger Dymock (<a href="https://creativecommons.org/licenses/by-sa/3.0/deed.en" target="_blank" rel="noreferrer noopener">CC BY-SA 3.0</a>).</figcaption></figure> <p>We often marvel at a comet’s “tail,” but in reality comets have three tails. What are these tails? They have to do with the composition of the comet and the environment it is passing through. Fred Whipple’s popular model of a comet as a “dirty snowball” speaks to the typical comet’s composition of rock, dust, and volatile compounds such as water ice, frozen carbon oxides, ammonia, and some hydrocarbons.</p> <p>The<em> dust tail</em> arises when the frozen volatiles are evaporated by the Sun: solar radiation pushes the liberated dust grains away from the Sun. The stream of dust reflects sunlight and appears as a long tail that can be millions of kilometers in length and sometimes quite broad. We know the Sun is causing this because the comet, whether approaching or receding from Sun, always has a dust tail pointing away from the Sun. On long tails, the momentum of the dust in the direction of orbit causes the tails to curve.</p> <p>High energy ultra-violet rays from the Sun knock electrons off the gas atoms to create positive ions. These ions follow the path of the charged particles from the solar wind to form the <em>ion tail</em> that always points away from the Sun. Since ionized carbon molecules emit blue light, this is the prominent color of the tail. Changes in the solar wind can cause disconnection events in the ion tail where a section of that tail is pinched off and ripped away from the comet.</p> <p>Large particles left behind by the comet are less impacted by solar radiation and remain in the orbit of the comet. If a visible comet crosses the plane of Earth’s orbit, and there is a sufficient density of particles, this edge-on view reveals this debris as a spike extending in front and behind the comet’s path of motion. Usually, only the <em>anti-tail</em> spike, opposite the dust tail, is prominent as the other is obscured by the dust tail. A few days on either side of this time period the anti-tail will look shortened and at an angle to the ion tail. Meteor showers happen when the Earth passes through these discarded particles that continue to orbit the Sun as the comet does.</p> </div> <p><strong>Late-October: Less Lunar Interference</strong><br>The Moon was full on October 17th which made it hard to image the comet. But just five days later, the Waning Gibbous was only 64% full, and rose hours after sunset. Guangyan Gao not only had to wait for the moon to be out of the early-evening sky, but clouds too.<br><br>“After two weeks of clouds in Seattle, there was finally a break in the weather. In an effort to try to get a good image of the comet, I made my way over to the mountain pass to try to catch a final glimpse of the comet. While it had dimmed considerably to around magnitude 4.5, with no more full moon in the sky, it was still a beautiful naked-eye object (even more amazing through binoculars). Through my f/4 Newtonian telescope, the darker sky allowed me to capture significantly more detail in in the comet’s tail, and the <a href="http://bit.ly/TVOPCORRMobil" data-type="link" data-id="http://bit.ly/TVOPCORRMobil" target="_blank" rel="noreferrer noopener">Paracorr-2 </a>helped ensure pin-point stars across the entire field.”</p> <p>Guangyan’s image below is an AstroBin “Top Pick” nomination.</p> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="600" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px-600x800.jpg" alt="" class="wp-image-81683" style="width:600px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px-600x800.jpg 600w, https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px-300x400.jpg 300w, https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px-113x150.jpg 113w, https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px-768x1024.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Guangyan_Gao_Comet_C2023_A3_Tsuchinshan-ATLAS_w1080px.jpg 1080w" sizes="auto, (max-width: 600px) 100vw, 600px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/xp3qpq/" data-type="link" data-id="https://www.astrobin.com/xp3qpq/" target="_blank" rel="noreferrer noopener">Comet C/2023 A3 (Tsuchinshan-ATLAS)</a> by AstroBin user <a href="https://www.astrobin.com/users/astrosymmetry/" target="_blank" rel="noopener">Guangyan Gao </a>. All rights reserved. Used by permission. Taken with <a href="http://bit.ly/TVOPCORRMobil" target="_blank" rel="noreferrer noopener">Tele Vue 2″ Paracorr Type-2</a> (VIP-2010) on GSO 6″ f/4 Imaging Newtonian with ZWO ASI2600MC Pro camera on iOptron HAE29 mount with Ecoflow RIVER 2 Portable Power Station and ZWO ASIAIR Mini controller. Exposures of 45×60″ for a total integration time of 45′ taken on Oct. 22, 2024 from Gold Creek Pond, Snoqualmie Pass, WA. Software used was Adobe Photoshop, Pleiades Astrophoto PixInsight, and Russell Croman Astrophotography BlurXTerminator.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="800" height="1750" src="https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738.jpg" alt="2 inch Paracorr Type-2" class="wp-image-964" style="width:150px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738-69x150.jpg 69w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738-183x400.jpg 183w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738-768x1680.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738-366x800.jpg 366w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_2010_ParacorrT2_ly-copy-e1494259047738-500x1094.jpg 500w" sizes="auto, (max-width: 800px) 100vw, 800px" /></a><figcaption class="wp-element-caption">VIP-2010 Parracorr</figcaption></figure> <p><strong>About 2″ Paracorr Type-2 (VIP-2010)</strong></p> <p>Our highly versatile 2″ Paracorr Type-2 comes with a “Tunable-Top” for visual use. It can handle both 2″ and 1¼” eyepieces with the included 2″-1¼” adapter. The Tunable-Top feature moves the eyepiece up and down to maintain the proper eyepiece field-stop to Paracorr lens distance for optimal coma correction. For f/3 Dob/Newts, the Paracorr Type-2 tightens star images at the edge of the field of view 25-times smaller than without coma correction.</p> <figure class="wp-block-image alignleft size-large is-resized image-border-black"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-scaled.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="618" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-618x800.jpg" alt="" class="wp-image-15802" style="width:300px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-618x800.jpg 618w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-309x400.jpg 309w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-116x150.jpg 116w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-768x994.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-1187x1536.jpg 1187w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-1583x2048.jpg 1583w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-1200x1553.jpg 1200w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr_2_chart_updated-scaled.jpg 1978w" sizes="auto, (max-width: 618px) 100vw, 618px" /></a><figcaption class="wp-element-caption">Paracorr Type-2 Spot Size vs Airy Radius</figcaption></figure> <p>You can separate Paracorr’s optical assembly from the Tunable-Top and use it with Tele Vue Imaging System components to permit imaging with DSLR and CCD cameras. APS size formats 27mm-diameter or smaller are recommended to minimize field vignetting. (BIG Paracorr Type-2 is the 3″ version of the Paracorr designed for imaging with fast scopes and big chips.) Ideal for mirrors as fast as f/3, this is an essential accessory for both observing and wide-field imaging through fast Newtonians. Looking at the image on the right, the VIP-2010 Paracorr Type-2 system includes: 2″-1¼” adapter (top), Tunable-Top (middle), and Paracorr Type-2 body (bottom).</p> <p class="clearBoth">Click the <em>Paracorr Type-2 Spot Size vs Airy Radius</em> diagram to quantify how well the Paracorr-Type 2 series banishes coma for various focal ratio parabolic reflectors. For each f-ratio shown, the curve in the diagrams indicates the RMS radius of a star image in microns from the center to the edge of the field with the 2″ Paracorr Type-2 installed. The shaded yellow area indicates spot sizes that fall below the diffraction limit for each given f-ratio — the <em>Airy Disc Radius</em> — is the calculated resolution limit radius of a distant star image and is indicated by the horizontal line at the top of the shaded yellow area. Notice that the theoretical spot size with the Paracrorr Type-2 is below the Airy Disc radius in the fastest mirrors. Except for the furthest reaches of the field in an f/3 scope, the spot size is still diffraction limited. Just compare the spot size at the same point in the field with an uncorrected parabola — see the diagram on the right side labeled <em>Spot Sizes for Parabola Alon</em>e.</p> </div> <p>Bill Fallon’s Tele Vue-NP127is also did a fine job on October 25th when the moon was in the last-quarter phase and rose very late at night.</p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="719" src="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px.jpg" alt="" class="wp-image-81681" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px-601x400.jpg 601w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px-150x100.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Bill_Fallon_C2023_A3_Tsuchinshan-ATLAS_Oct252024_w1080px-768x511.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/twpfdb/" target="_blank" rel="noopener">C/2023 A3 (Tsuchinshan-ATLAS) Oct252024</a> by AstroBin user <a href="https://www.astrobin.com/users/wjf56/" target="_blank" rel="noopener">Bill Fallon</a>. All rights reserved. Used by permission. <a href="http://bit.ly/TVONP127isMobile_" data-type="link" data-id="http://bit.ly/TVONP127isMobile_" target="_blank" rel="noreferrer noopener">Tele Vue-NP127is</a> APO Nagler-Petzval Refractor with 0.8x reducer and FLI Atlas focuser into QHYCCD QHY268 M camera. All carried on Software Bisque Paramount MYT mount. Imaged through Astronomik Type 2c 50mm red, green and Blue filters for 20×60″ each filter. Total integration for comet was 1h with separate 15sec exposures for stars. Software used was Pleiades Astrophoto PixInsight. Imaged Oct. 25, 2024 from Temecula, CA.</figcaption></figure> <p><strong>November 1st: New Moon and Fading Comet</strong><br>At the start of November, the comet had a 56° elongation from the Sun. It was no longer a race against time to image the comet before it set. The converse was that at 1 AU distant from the Sun, it wasn’t the bright comet it was a month earlier. The new moon on November 1st signaled the start of a final opportunity to image the comet before the brightening moon would blot it from the sky. Ryan Noonan used his Paracorr equipped Newtonian to both view and image the comet on that date: “I’d had a great experience with the Paracorr, both for visual as well as for imaging!”</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="620" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px-620x800.jpg" alt="" class="wp-image-81685" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px-620x800.jpg 620w, https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px-310x400.jpg 310w, https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px-116x150.jpg 116w, https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px-768x991.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Ryan_Noonan_C2023_A3_First-_Successful_w1080px.jpg 1080w" sizes="auto, (max-width: 620px) 100vw, 620px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/v3qfzv/" target="_blank" rel="noopener">C/2023 A3 Tsuchinshan – first successful comet attempt</a> by AstroBin user <a href="https://www.astrobin.com/users/noon/" target="_blank" rel="noopener">Ryan Noonan</a>. All rights reserved. Used by permission. Imaged using <a href="http://bit.ly/TVOPCORRMobil" data-type="link" data-id="http://bit.ly/TVOPCORRMobil" target="_blank" rel="noreferrer noopener">Tele Vue 2″ Paracorr Type-2 </a>(VIP-2010) on 10″ f/4.5 Newtonian with OGMA AP26MC camera all carried on Losmandy G11 / G11G mount. Exposures through Chroma 50mm Red, Green, and Blue filters for 3×300″(15′) each color for a total of 45’ minutes. Taken November 1st from 7:00pm to 7:45pm. Software used was Adobe Photoshop, Pleiades Astrophoto PixInsight, and Stefan Berg’s Nighttime Imaging ‘N’ Astronomy (NINA). Taken from Los Alamitos, CA.</figcaption></figure> <p></p> <p></p> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #C/2023A3</strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>2024: Year-End Astronomical Events</title> <link>https://televue.com/televueopticstalk/2024/10/02/2024-year-end-astronomical-events/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Wed, 02 Oct 2024 13:49:57 +0000</pubDate> <category><![CDATA[Sky Events]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[annular eclipse]]></category> <category><![CDATA[C/2023 A3 Tsuchinshan–ATLAS]]></category> <category><![CDATA[Jupiter]]></category> <category><![CDATA[Moon]]></category> <category><![CDATA[Saturn]]></category> <category><![CDATA[supermoon]]></category> <category><![CDATA[Uranus]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=76555</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/10/02/2024-year-end-astronomical-events/" title="2024: Year-End Astronomical Events" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>2024 Oct 2nd Eclipse Livestream! The clock is winding down on 2024 with just three months left. But our clockwork universe has many astronomical events in store for us stargazers. ]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/10/02/2024-year-end-astronomical-events/" title="2024: Year-End Astronomical Events" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_YearEnd2024.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p>The clock is winding down on 2024 with just three months left. But our clockwork universe has many astronomical events in store for us stargazers. This includes and eclipse, Supermoons, conjunctions, occultations, and a possible daylight comet! </p> <figure class="wp-block-image alignleft is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="1080" src="https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h.jpg" alt="" class="wp-image-4448" style="width:400px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-150x150.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-400x400.jpg 400w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-768x768.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-800x800.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-300x300.jpg 300w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-500x500.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-24x24.jpg 24w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-48x48.jpg 48w, https://televue.com/televueopticstalk/wp-content/uploads/Super-MicroMoon-20150829_h-96x96.jpg 96w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption">Supermoon versus Micromoon © <a href="http://astro.aquarellia.com/" target="blank" rel="noopener">Michel Deconinck</a>. All rights reserved. Used by permission. This is a simulated comparison from a pastel sketch made during the perigee full Moon of 2015 August 29th. Sketch took more than two-hours using 4” f/10 Bresser refractor.</figcaption></figure> <p><strong>The Moon</strong><br><span style="text-decoration: underline;">Supermoons Rule The Fall Season</span><br>Due to the elliptical shape of the lunar orbit, the distance from the Earth to the Moon can vary by 50,200 km (31,200 mi). The term <em>Supermoon </em>describes a full Moon that occurs near the Moon’s closest approach to Earth (perigee) while <em>Micromoon </em>describes a full Moon near the point furthest from the Earth (apogee). A Supermoon can be 14% bigger than a Micromoon. The difference in size is very obvious in photographic comparisons.</p> <p>There is no agreed-upon definition of how close and far a Moon needs to be to qualify for any of these designations, so sources may differ on the number of these Moons in a year. This year, every month in the Fall season has a Supermoon! From our reckoning, these are the dates of the remaining <strong>Supermoons </strong>of the year with the date of perigee in parenthesis: </p> <p><strong>October 17</strong> (October 16), <strong>November 15</strong> (November 14), and <strong>December 15</strong> (December 12). </p> <figure class="wp-block-image alignright"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SE2024Oct02A1.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="250" height="270" src="https://televue.com/televueopticstalk/wp-content/uploads/SE2024Oct02A1.gif" alt="" class="wp-image-81618"/></a><figcaption class="wp-element-caption">Animation of Annular Solar Eclipse 2 October 2024.</figcaption></figure> <p><strong>The Sun</strong><br><span style="text-decoration: underline;">Solar Eclipses</span><br>This is the third year in a row that a solar eclipse in April is followed by another one six months later in October. That three year cycle won’t repeat again until the year 2041. The upcoming <strong>October 2nd</strong>, event will be an <em>Annular </em>eclipse (from the word <em>annulus </em>or ring) that happens when the Moon appears inside the disk of the Sun, but is too small to cover the Sun completely. This allows a ring of light from the Sun to shine around the lunar disk. <em>Viewers are cautioned to keep eclipse glasses on for all phases of this event. There will be no totality or solar corona to observe.</em></p> <p>Starting in the Northern Pacific Ocean, the path of totality will cross the equator and head south and cross the tip of South America into southern Chile and Argentina before ending off the coast in the chilly South Atlantic waters. The duration of the ring of fire will be a long 7′ 25″. See the <a href="https://www.timeanddate.com/eclipse/solar/2024-october-2" target="_blank" rel="noreferrer noopener">TimeAndDate.com</a> site for what the eclipse will look like and the live stream on YouTube.</p> <figure class="wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><div class="wp-block-embed__wrapper"> <iframe loading="lazy" title="LIVE: Annular Solar Eclipse - October 2, 2024" width="800" height="450" src="https://www.youtube.com/embed/maq5N4okQnU?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> </div></figure> <div style="height:28px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>FoneMate for Smartphone Imaging</strong></p> <figure class="wp-block-image alignleft size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1053" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1053x800.jpg" alt="" class="wp-image-5733" style="width:131px;height:99px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1053x800.jpg 1053w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-150x114.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-527x400.jpg 527w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-768x583.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-500x380.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1200x911.jpg 1200w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17.jpg 1422w" sizes="auto, (max-width: 1053px) 100vw, 1053px" /></a><figcaption class="wp-element-caption"><em>Use </em><a rel="noreferrer noopener" href="http://bit.ly/TVOFMImgFull" target="_blank">FoneMate</a><em><img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> to record events through your telescope.</em></figcaption></figure> <p>FoneMate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> can help to get steadier shots at the eyepiece with your smartphone camera. Unlike other phone mounts, FoneMate was designed to mount solidly to Tele Vue eyepieces via its Tele Vue compatible lock-ring connection. Use our<a rel="noreferrer noopener" href="http://bit.ly/TVOFMFull" target="_blank"> FoneMate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /></a> smartphone adapter (<a rel="noreferrer noopener" href="http://bit.ly/TVOFMMobile" target="_blank">mobile site</a>) on a compatible Tele Vue eyepiece to share lunar, solar, and eclipse views with friends or to do on-the-go imaging. </p> <p>While your camera app displays the image on the screen, hit the shutter or video button to capture the moment. Use voice commands to avoid movement on night imaging. (If you’ve set up your iOS/Android phone to take voice commands, just say “Hey Siri/Ok Google, take a photo”.) Using a time-lapse photo app will allow you to capture longer events like eclipses/transits (use telescope filters for solar work). </p> </div> <p><strong>The Planets</strong><br><span style="text-decoration: underline;">Oppositions</span><br>Planets in <em>opposition </em>are in the sky opposite the Sun when viewed from Earth. They rise at sunset and are in the sky all night. Around opposition, the planets are closest to Earth and at their brightest. This makes opposition an opportune time to view and image a planet — especially the faint “ice giants” Uranus and Neptune. Note that only planets with orbits further away from the Sun than Earth’s orbit can be in opposition.</p> <p>Fall is opposition season with all the giant planets sparkling in the the sky at night. </p> <ul class="wp-block-list"> <li>Uranus: <strong>November 17</strong></li> <li>Jupiter: <strong>December 7</strong></li> </ul> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024-.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="486" src="https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024-.jpg" alt="" class="wp-image-81624" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024-.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024--700x315.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024--150x68.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SHenning_PlanetParade_20-to-21-September-2024--768x346.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/z072ba/" target="_blank" rel="noopener">Planet Parade on the night of 20 to 21 September 2024</a> by AstroBin user <a href="https://www.astrobin.com/users/HenningSchmidt/" target="_blank" rel="noopener">Henning Schmidt</a>. All rights reserved. Used by permission. Mars and the gas giants parade through the evening sky. Celestron C14 with Tele Vue 2x Powermate (<a href="http://bit.ly/TVOPMBakMobile" target="_blank" rel="noreferrer noopener">PMT-2200</a>) for an effective focal length of 7.82-meters. RGB frames taken with PlayerOne Mars-C camera using Baader UV/IR-Cut filter while IR frames used ZWO ASI 290MM and Baader IR-Pass-filter. All sub-frames were 15ms duration. Mount used was Sky-Watcher EQ8. Taken in Rostock, Germany.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="661" height="1351" src="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy.jpg" alt="" class="wp-image-1093" style="width:165px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy.jpg 661w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-73x150.jpg 73w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-196x400.jpg 196w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-391x800.jpg 391w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-500x1022.jpg 500w" sizes="auto, (max-width: 661px) 100vw, 661px" /></a><figcaption class="wp-element-caption">Nagler 3-6 Planetary Zoom.</figcaption></figure> <p><strong><strong>The Most Versatile Planetary Eyepiece!</strong></strong></p> <p>The Nagler Zoom was conceived as our ideal planetary eyepiece. Like all Tele Vue eyepieces, it’s designed for full-field sharpness in any speed telescope, as well as high contrast and transmission with natural color rendition, low scatter, and comfortable eye relief. Use it to fine-tune magnification for the seeing conditions — no need to swap eyepieces to find the highest usable power. It’s parfocal through the zoom range, maintains its eye relief, and has click-stops at each marked focal length. Its constant 50° apparent field of view makes it more appropriate for scopes on tracking mounts. It is excellent for turning up the power to confirm that you’ve sighted an ice-giant planet like Uranus or Neptune and not a field star. Read more about it on our website <a href="http://bit.ly/TVON3-6ZFull" target="_blank" rel="noreferrer noopener">Nagler 3-6</a>-mm and (<a href="http://bit.ly/TVON3-6Mobile" target="_blank" rel="noreferrer noopener">mobile site</a>).</p> </div> <p><span style="text-decoration: underline;">Planetary Conjunctions and Occultations</span><br>Moving along the ecliptic path, sometimes planets cozy up to each other or with the Moon. These are planetary conjunctions. For the remainder of the year, the best planetary conjunctions easily visible well above horizon obstructions for mid-northern latitude observers involves the Moon and Saturn. Events listed are for these objects within ½° (30′) of each other. In some parts of the world, the these conjunctions will be closer or even become lunar <em>occultations </em>where the object slides behind the Moon.</p> <figure class="wp-block-image aligncenter"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Moon_Crescent_Occulting_Saturn_with_10mm_Delos.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="700" height="397" src="https://televue.com/televueopticstalk/wp-content/uploads/Moon_Crescent_Occulting_Saturn_with_10mm_Delos.jpg" alt="" class="wp-image-4419" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Moon_Crescent_Occulting_Saturn_with_10mm_Delos.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Moon_Crescent_Occulting_Saturn_with_10mm_Delos-150x85.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Moon_Crescent_Occulting_Saturn_with_10mm_Delos-500x284.jpg 500w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a><figcaption class="wp-element-caption"><a href="http://astro.aquarellia.com/croquis/sat-lune-h.jpg" target="_blank" rel="noopener">The Occultation of Saturn by the Moon</a> © <a href="http://astro.aquarellia.com" target="_blank" rel="noopener">Michel Deconinck</a>. All rights reserved. Used by permission. Tele Vue 10mm <a href="http://bit.ly/TVODELOSBKGMOB" target="_blank" rel="noreferrer noopener">Delos </a>eyepiece (100x) with 4” f/10 Bresser refractor. Saturn is emerging from behind the crescent Moon (less than 4° above horizon) on October 26, 2014. Original sketch done with graphite pencil on white paper withwater color paint added later.<br></figcaption></figure> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="1350" src="https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024.jpg" alt="" class="wp-image-81625" style="width:400px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024-640x800.jpg 640w, https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/Jari-Saukkonen-Comet-c2023.a3T-A-26Aug2024-768x960.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.instagram.com/p/DAZMmRptckc" target="_blank" rel="noopener">Comet C/2023 A3 (Tsuchinshan–ATLAS) on 26.9.2024</a> by Instagram user <a href="https://www.instagram.com/jarisaukkonen/" target="_blank" rel="noopener">Jari Saukkonen</a>. All rights reserved. Used by permission. Home-made 10-in f/4.5 Newtonian Astrograph with Tele Vue 3″ BIG Paracorr Type-2 (<a href="http://bit.ly/2ESQprN" target="_blank" rel="noreferrer noopener">VIP-3010</a>) coma corrector feeding image into ZWO ASI6200MM Pro camera through Chroma 50mm R,G, & B filters. All gear was riding on 10Micron GM1000 HPS mount. Final image is combined 90 second exposures. More details on <a href="https://www.astrobin.com/1awpxf/" target="_blank" rel="noopener">Astrobin</a>. Taken from remote observatory in Rio Hurtado Valley, Chile.</figcaption></figure> <ul class="wp-block-list"> <li><strong>October 14 evening</strong>: Conjunction of Moon and Saturn with the Moon 6’45” north of Saturn. They will be visible at sundown and set around 3 A.M. the next day. (Occultation visible in south-east Africa and south central Asia.)</li> <li><strong>November 10 evening</strong>: Conjunction of Moon and Saturn with the Moon 5’18” north of Saturn. They will be visible at sundown and set around midnight. (Occultation visible in Central America, Caribbean, and north-west South America.)</li> <li><strong>December 8 evening</strong>: Conjunction of Moon and Saturn with the Moon 18′ north of Saturn. They will be visible at sundown near their highest point in the sky and will set after 10 P.M. (Occultation visible in Indonesia.)</li> </ul> <p><strong>Comets of Interest</strong><br>Comet <strong>C/2023 A3 Tsuchinshan–ATLAS</strong>, swung through perihelion on 27 September 2024 and will make the closest approach to Earth on <strong>October 12th</strong>. This comet is breaking expectations and may be <em>bright enough to see in daylight if you are careful!</em> Being close to the Sun in daylight, it would be best to setup in the shade of a building to attempt the observation and view the comet with a camera or smartphone on the eyepiece. But comet brightness is hard to predict.</p> <p>Currently visible in both hemispheres (highest in the sky in the tropics), best viewing in twilight is before sunrise for the first few days of October after which it will then become an evening object in October skies. Allow <a href="https://theskylive.com/planetarium?obj=c2023a3" target="_blank" rel="noreferrer noopener">TheSkyLive.com</a> site to know your location and it will produce a map showing the comet location for any time and date.</p> <p>This comet is from the Oort cloud: a “cloud” composed of billions of comets at the outer-edge of our solar system. We know this from calculating it’s orbit and finding it reaches 1.4-light years or from the Sun. </p> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #C2023A3 </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>Solar Cycle 25: Up and Up!</title> <link>https://televue.com/televueopticstalk/2024/09/16/solar-cycle-25-up-and-up/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Mon, 16 Sep 2024 18:50:15 +0000</pubDate> <category><![CDATA[Astro Image]]></category> <category><![CDATA[Sky Events]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[25]]></category> <category><![CDATA[solar cycke]]></category> <category><![CDATA[sun]]></category> <category><![CDATA[sunspots]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81487</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/09/16/solar-cycle-25-up-and-up/" title="Solar Cycle 25: Up and Up!" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>Increased solar activity around "solar max" can contribute to more frequent and intense sunspots, flares, coronal mass ejections, and intensified auroras at lower latitudes, offering stunning visual displays. All “good news” for amateur observers! ]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/09/16/solar-cycle-25-up-and-up/" title="Solar Cycle 25: Up and Up!" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImageSolar.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <blockquote class="wp-block-quote is-layout-flow wp-container-core-quote-is-layout-1 wp-block-quote-is-layout-flow"> <p><strong>Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years</strong></p> <p>The estimated sunspot number for August 8th likely reached the highest value thus far in Solar Cycle 25 and may be the highest since at least July, 2002.</p> <cite>NOAA – Space Weather Service – update Aug. 9, 2024</cite></blockquote> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="669" src="https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops.jpg" alt="" class="wp-image-81554" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops-646x400.jpg 646w, https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops-150x93.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Paul-Margolies-Solar-Flare-Loops-768x476.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/33sgcu/" target="_blank" rel="noopener">Solar Flare Loops</a> by AstroBin user <a href="https://www.astrobin.com/users/pdmphoton/" target="_blank" rel="noopener">Paul Margolies</a>. All rights reserved. Used by permission. Coronal loops are arch-like structures that follow magnetic field lines — usually rooted in sunspots. Gear used: Lunt LS130MT H-alpha double stack scope + Tele Vue 2.5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier + ZWO ASI174MM camera all riding on iOptron CEM120 mount. Software used was Adobe Photoshop, AstroSharp Ltd SharpCap, Emil Kraaikamp AutoStakkert!, and Filip Szczerek ImPPG (Image Post-Processor). 1424 x 882 image taken from home observatory in Meadview, AZ.<br> “My Tele Vue Powermates are terrific performers,” says Paul.</figcaption></figure> <p><strong>The Predictive Landscape for Solar Cycle 25</strong><br>Predictions surrounding the highest sunspot number for Solar Cycle 25 have garnered significant attention from scientists and enthusiasts alike. The National Oceanic and Atmospheric Administration (NOAA) and the Solar Cycle Prediction Panel have refined their models, leading to exciting potential outcomes. </p> <figure class="wp-block-image aligncenter is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="370" src="https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots.jpg" alt="" class="wp-image-81549" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots-700x240.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots-150x51.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/DominiqueDierick_TV2.5xAP130GTX_06AUG24_Sunspots-768x263.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.flickr.com/photos/dodi-belgium/53906678883/" target="_blank" rel="noopener">Close up of the large sunspot groups on August 6</a> by flickr user <a href="https://www.flickr.com/people/dodi-belgium/" target="_blank" rel="noopener">Dominique Dierick</a>. All rights reserved. Used by permission. Active Region 13780 is on the limb of the sun. AR 13777 is the “island chain” to the right of center. The final grouping on the right has two identifiers: the smaller spots on the left side is AR 13779 and the denser spot on the right is the largest member of AR 13774. To the lower-right is a member of AR 13772. Acquired with Astro-Physics Starfire EDFS 130mm refractor with Tele Vue 2.5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier and Player One Neptune-M camera. Taken from Belgium.</figcaption></figure> <p>Increased solar activity around “solar max” can contribute to more frequent and intense sunspots, flares, coronal mass ejections, and intensified auroras at lower latitudes, offering stunning visual displays. All “good news” for amateur observers! On the flip-side, this heightened solar activity can impact satellite communications, decrease the in-orbit lifespan of satellites below 1,200-miles due to atmospheric expansion interfere with GPS accuracy, cause power grid fluctuations on the Earth, and impact manned missions and operations within the near-Earth environment including on the space station and planned lunar missions.</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="678" src="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14.jpg" alt="" class="wp-image-81551" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14-637x400.jpg 637w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14-150x94.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-Sunspot-and-Granule-2024-08-14-768x482.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/7lo673/" target="_blank" rel="noopener">Sunspot and Granule, 2024-08-14</a> by AstroBin user <a href="https://www.astrobin.com/users/kyuseob/" target="_blank" rel="noopener">Kyu Seob KIM</a>. All rights reserved. Used by permission. This white light, high-contrast image was an AstroBin Top-Pick Nomination. The darkest area of the sunspot is the umbra and the lighter region around it is the penumbra. The granulation pattern around the spots are caused by convection cells of rising and descending plasma. Equipment used was Askar 185mm APO scope + Baader Planetarium 2inch Herschel Prism MK-II with built-in Baader Neutral Density (ND 3.0) and 7.5nm Solar Continuum (540nm) filters + Tele Vue 2.5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier + Player One Mars-M camera all riding on Rainbow Astro RST-300 mount with SUPER MOUNT CYG-48G tripod. Exposure was 9.50 ms at 105 FPS for a total of 10000 frames at 1574 x 988 resolution. Software used was Adobe Photoshop, Emil Kraaikamp AutoStakkert!, and Torsten Edelmann FireCapture. Taken Aug. 14, 2024 from backyard in Cheongju, Korea.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Solar PUNCH</strong><em><strong>!</strong></em></p> <figure class="wp-block-image alignright is-resized"><img loading="lazy" decoding="async" width="720" height="975" src="https://televue.com/televueopticstalk/wp-content/uploads/PUNCH-2024logo_720x975.png" alt="" class="wp-image-81600" style="width:250px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PUNCH-2024logo_720x975.png 720w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCH-2024logo_720x975-295x400.png 295w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCH-2024logo_720x975-591x800.png 591w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCH-2024logo_720x975-111x150.png 111w" sizes="auto, (max-width: 720px) 100vw, 720px" /></figure> <p>The corona is a highly charged plasma that is much hotter than the surface of the Sun. How it gets its energy and the impact of the corona on the solar wind will be the subject of study by the NASA Small Explorer PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission. We’re proud to have been specifically chosen by the lead scientist of the PUNCH mission to design, manufacture, and assemble the optical lens assembly (OLA) for the Wide Field Imager (WFI) cameras which will be deployed on three of the four satellites that will launch in 2025. They will image the solar wind as it leaves the corona, thus providing “the first global images of how the solar corona infuses the solar wind with mass and energy” according to Southwest Research Institute (SwRI) in Boulder, Colorado, which is running the mission. Because the solar wind makes the space weather that impacts everything from the power grid on Earth, astronaut safety, radio communications, satellite operations, and the aurora, this knowledge will make our planet better prepared for the adverse impact of space weather on satellite and ground systems.</p> <p>At first glance, the OLA could be mistaken for the guts of one of our proprietary Tele Vue eyepiece designs. However, there are important differences to satisfy NASA’s qualification criteria for space flight: first, there are no cemented elements in the design. Next, the housing is made from expensive, but stable, titanium with tiny ventilation passages and holes to minimize the pressure difference across the inside and outside of the OLA. Our in-depth analysis of the OLA design had to consider factors beyond what our amateur gear is accustomed to: maximum stresses in the glass and titanium parts from vibration during launch and from cooling during operation in orbit to -60° C.</p> <p>The mission is expected to have a 90-day commissioning phase followed by 2 years of observations. If you see any reporting on the PUNCH WFI in the future, now you’ll know those are Tele Vue lenses responsible for the image. With our company roots in the space race, this brings Tele Vue’s involvement with space technologies full circle!</p> <figure class="wp-block-image aligncenter is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1020" height="274" src="https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop.jpg" alt="" class="wp-image-81601" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop.jpg 1020w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop-700x188.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop-150x40.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/PUNCHERS-IN-ORBIT-crop-768x206.jpg 768w" sizes="auto, (max-width: 1020px) 100vw, 1020px" /></a><figcaption class="wp-element-caption">PUNCH spacecraft will be in Sun-synchronous, low Earth orbit, to allow continuous, 3D images of the solar corona from 1.5° to 45° from the Sun. For this purpose, three of the spacecraft will carry wide field imagers and orbit 120° apart, while one will carry a narrow field imager. Source: SwRI and UCAR.</figcaption></figure> <p>Visit the <a href="https://punch.space.swri.edu/" data-type="link" data-id="https://punch.space.swri.edu/" target="_blank" rel="noreferrer noopener">Polarimeter to UNify the Corona and Heliosphere</a> website to learn more about the mission. </p> </div> <p>The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center <a href="https://www.swpc.noaa.gov/products/solar-cycle-progression" target="_blank" rel="noreferrer noopener">sunspot graph</a> (below) shows a rising level of solar activity that may not peak until mid-2025 — this is forecast based on the solar minimum of December 2019 when Solar Cycle 24 ended. Cycle 24 had the weakest solar activity in 100-years and predictions in 2020 were that Cycle 25 would be similar. The actual sunspot count in the graph (jagged line) has now reached levels not seen in a generation. Images posted on social media are full of sunspots, flares, and aurora photos due to numerous coronal mass ejections from this cycle.</p> <figure class="wp-block-image aligncenter size-full is-resized"><img loading="lazy" decoding="async" width="965" height="272" src="https://televue.com/televueopticstalk/wp-content/uploads/SolarCyclesRecent_21-25.jpg" alt="" class="wp-image-81565" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SolarCyclesRecent_21-25.jpg 965w, https://televue.com/televueopticstalk/wp-content/uploads/SolarCyclesRecent_21-25-700x197.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/SolarCyclesRecent_21-25-150x42.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SolarCyclesRecent_21-25-768x216.jpg 768w" sizes="auto, (max-width: 965px) 100vw, 965px" /><figcaption class="wp-element-caption">Sunspot numbers from recent Solar Cycles (SC). We are currently in SC 25. Adopted from International Space Environment Service Solar Cycle Sunspot Number Progression chart on Space Weather Prediction Center website retrieved on 6 Aug. 2024.</figcaption></figure> <p><strong>Waiting for “Solar Max”</strong><br>The term “solar maximum” refers to the peak of solar activity in a given solar cycle, characterized by an increased number of sunspots, solar flares, and coronal mass ejections (CMEs). This phase of the solar cycle can last for several years. The solar maximum is identified through the <em>sunspot number</em>, which is a quantifiable measure of solar activity recorded daily. The sunspot number is calculated using a formula that considers the number of sunspots observed, their sizes, and their groupings. Spaceweather.com suggests that amateur astronomers can estimate the number of sunspots visible in a small scope by dividing the daily published Sunspot Number by 15. Solar Cycle 24, recorded a maximum of sunspot number of 116 and our current Solar Cycle 25 reached 337 on August 8. </p> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1058" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772-1058x800.jpg" alt="" class="wp-image-81550" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772-1058x800.jpg 1058w, https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772-529x400.jpg 529w, https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772-150x113.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772-768x581.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Fran-Cisco-Sol-2024-08-08-AR-13774-y-13772.jpg 1080w" sizes="auto, (max-width: 1058px) 100vw, 1058px" /></a><figcaption class="wp-element-caption"><a href="https://www.flickr.com/photos/karaguebo/53915266988" target="_blank" rel="noopener">Sol Región Activa 13774 y 13772</a> by flickr user <a href="https://www.flickr.com/people/karaguebo/" target="_blank" rel="noopener">Fran Cisco</a>. All rights reserved. Used by permission. Sunspots and granules near the limb of the sun. Taken with Sky Watcher Evostar PRO 120 ED APO (120/900, f7.5) + Tele Vue 2.5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier + Baader 2″ Cool-Ceramic Safety Herschel Prism + Baader Neutral Density Filter 1¼” (ND 0.6, T=25%) + Baader Solar Continuum Filter 1¼” (double stacked) (540nm) + ZWO ASI178MM all riding on iOptron AZ Mount Pro. Video of 60 seconds with 0.032ms exposure at 26 fps taken at 3096 x 2080 resolution with Gain: 97 (19%). Total Frames taken 1601 with best 31% stacked. Software used was FireCapture, AutoStakkert, Registax, and Photoshop. Taken 8 August 2024 at 14:28 UT from Bembibre, Spain.<br></figcaption></figure> <p>While Cycle 25 is far from over, observations indicating Cycle 26 is starting while Cycle 25 continues! This was done though helioseismology: the study of oscillations (mostly sound waves) near the sun’s surface using solar observing spacecraft.</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="610" src="https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm.jpg" alt="" class="wp-image-81553" style="object-fit:cover;width:900px;height:400px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm-700x395.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm-150x85.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Leela-Astro-Imaging-Sun-29-July-2024-0820UT-540nm-768x434.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/gi736t/0/" target="_blank" rel="noopener">Sun – 29 July 2024 – 0820UT – 540nm – ARs 3765, 66, 67, 70</a> by AstroBin user <a href="https://www.astrobin.com/users/Leela.Astro.Imaging/" target="_blank" rel="noreferrer noopener">V Bewtra (Leela Astro Imaging)</a>. All rights reserved. Used by permission. This grouping of active regions was Solar Picture of the Day on SolarChat! Forum for 29 July 2024. Image taken with Sky-Watcher StarTravel 102 (f5, 500mm) scope with Baader Solar Continuum (540nm) 10nm 1.25″ and Tele Vue 2.5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier into Player One Mars-M all carried on Rowan Astronomy AZ100 mount. Software used was Emil Kraaikamp AutoStakkert!, Filip Szczerek ImPPG (Image Post-Processor),GNU Image Manipulation Program (GIMP), and Torsten Edelmann FireCapture.</figcaption></figure> <p></p> <p></p> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Meet the Tele Vue Line of Powermate Amplifiers</strong></p> <p>You may have noticed that all the images on this page were created with the help of Tele Vue’s Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> line of focal length amplifiers. This allowed for the close-up views of solar activity.</p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="350" height="446" src="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg" alt="" class="wp-image-817" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg 350w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb-118x150.jpg 118w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb-314x400.jpg 314w" sizes="auto, (max-width: 350px) 100vw, 350px" /></a><figcaption class="wp-element-caption">Powermates come in 1¼” (2.5x & 5x) and 2″ (2x, & 4x).</figcaption></figure> <p>Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> photo / visual amplifiers increase the focal length of your scope with reduced aberrations, greater magnification potential, and compact size compared to typical Barlow lenses. Also, Powermates<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> can be stacked with no adverse impact. Powermates are available in different barrel sizes and powers to meet your mission needs: 1¼” (2.5x & 5x) and 2″ (2x, & 4x) formats. An optional Powermate T-Ring Adapter can replace the eyepiece barrel and provide M42 threads for connecting to your astro camera or DSLR via T-Ring.</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set.jpg" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="1080" height="269" src="https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set.jpg" alt="" class="wp-image-5734" style="width:700px;height:174px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set-150x37.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set-700x174.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set-768x191.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate-PTR-Set-500x125.jpg 500w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption">Powermate T-Ring Adapters (left-to-right): PTR-2200 for 2x, PTR-4201 for 4x, and PTR-1250 for 2.5x & 5x Powermates.</figcaption></figure> <p>Imaging with Powermates is easy: the visual tops all unscrew to accept a specific Tele Vue Powermate T-Ring Adapter for use with standard camera T-rings.</p> <p>Read more on our <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate</a> page (<a href="http://bit.ly/TVOPMBakMobile" target="_blank" rel="noreferrer noopener">mobile</a> site).</p> </div> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="750" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780-750x800.jpg" alt="" class="wp-image-81552" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780-750x800.jpg 750w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780-375x400.jpg 375w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780-141x150.jpg 141w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780-768x819.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Kyu-Seob-KIM-2panel-mosaic-close-up-Sp-AR-3780.jpg 1080w" sizes="auto, (max-width: 750px) 100vw, 750px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/ynzr5f/" target="_blank" rel="noopener">2 Panels Mosaic: Close-up of Sunspot, AR 3780</a> by AstroBin user <a href="https://www.astrobin.com/users/kyuseob/" target="_blank" rel="noopener">Kyu Seob KIM</a>. All rights reserved. Used by permission. White light image of sunspots and granules at the limb of the solar disk. Equipment used was Askar 185mm APO scope + Baader Planetarium 2inch Herschel Prism MK-II with built-in Baader Neutral Density (ND 3.0) and 7.5nm Solar Continuum (540nm) filters + Tele Vue 5x 1.25″ <a href="https://bit.ly/TVOPMBackFull" target="_blank" rel="noreferrer noopener">Powermate </a>focal length amplifier + ZWO ASI174MM camera all riding on Rainbow Astro RST-300 mount with SUPER MOUNT CYG-48G tripod. Exposure was 8 ms at 103 FPS for a total of 10000 frames at 1635 x 1744 resolution. Software used was Adobe Photoshop, Emil Kraaikamp AutoStakkert!, Microsoft Image Composition Editor (ICE), and Torsten Edelmann FireCapture. Taken Aug. 6, 2024 from backyard in Cheongju, Korea.</figcaption></figure> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <p class="nogap"><strong>More Info</strong></p> <ul class="wp-block-list"> <li>See more <a href="https://bit.ly/TVOPMImageFul" target="_blank" rel="noreferrer noopener">Powermate images</a> and a list of blog posts featuring Powermate.</li> </ul> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>Stellafane: Al’s Voyage “Home”</title> <link>https://televue.com/televueopticstalk/2024/08/28/stellafane-als-voyage-home/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Wed, 28 Aug 2024 19:45:22 +0000</pubDate> <category><![CDATA[History]]></category> <category><![CDATA[People]]></category> <category><![CDATA[Shows]]></category> <category><![CDATA[Tele Vue]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[Al Nagler]]></category> <category><![CDATA[Judi Nagler]]></category> <category><![CDATA[Stellafane]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81486</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/08/28/stellafane-als-voyage-home/" title="Stellafane: Al’s Voyage “Home”" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="Al Nagler with 12inch scope featured in Sky & Telescope October 1972 issue" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>This August, my wife Judi and I made our annual pilgrimage to the Stellafane convention in Vermont, a tradition we've kept alive since the 1950s]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/08/28/stellafane-als-voyage-home/" title="Stellafane: Al’s Voyage “Home”" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="Al Nagler with 12inch scope featured in Sky & Telescope October 1972 issue" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/featuredImage_AlVoyageHome.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <figure class="wp-block-image"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1174" height="554" src="https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting.jpg" alt="" class="wp-image-2837" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting.jpg 1174w, https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting-150x71.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting-700x330.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting-768x362.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Bean_StellafanePainting-500x236.jpg 500w" sizes="auto, (max-width: 1174px) 100vw, 1174px" /></a><figcaption class="wp-element-caption">Here’s a painting I commissioned by Hulan Fleming of my family attending Stellafane in the early 1990s.</figcaption></figure> <p>This August, my wife Judi and I made our annual pilgrimage to the Stellafane convention in Vermont, a tradition we’ve kept alive since the 1950s. Hosted by the Springfield Telescope Makers (STM), it takes its name from the group’s clubhouse: “Stellafane” is a Latin/Middle-English contraction of “star” and “shrine”. This year was particularly special as it marked the 100th anniversary of the Clubhouse’s opening. Situated on a 3½ acre site on Breezy Hill, this location has been recognized as a National Historic Landmark since 1989.</p> <p>STM owes its existence to Russel Porter, an amateur telescope maker, and the founding bylaws still require full members to have crafted their own telescope objective. The convention at Stellafane is a celebration of telescope making, with prizes awarded for craftsmanship and optical quality. As a two-time award recipient myself, it’s an honor just to participate. It’s always a joy to return to the “birthplace of amateur telescope making” in the United States, where amateur astronomers and telescope enthusiasts come together to share their passion for handcrafted astronomical instruments.</p> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Al Nagler’s Stellafane Awards</strong></p> <figure class="wp-block-image aligncenter is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1024" height="749" src="https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct.jpg" alt="" class="wp-image-81501" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct.jpg 1024w, https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct-547x400.jpg 547w, https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct-150x110.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SF_Al_12inch_ST1972Oct-768x562.jpg 768w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></a><figcaption class="wp-element-caption">Stellafane memories: image and caption from October 1972 <em>Sky & Telescope</em> magazine report on that year’s Stellafane. Courtesy S&T.</figcaption></figure> <p>Al Nagler has been twice recognized with Stellafane awards: in 1958 for 3rd place in “mechanical excellence” for an 8-inch Newtonian and again in 1972 with 1st prize in the “Newtonian” telescope category for his 12-inch f/5.3.</p> <figure class="wp-block-image aligncenter is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1024" height="705" src="https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287.jpg" alt="" class="wp-image-81503" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287.jpg 1024w, https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287-581x400.jpg 581w, https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287-150x103.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287-768x529.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/SF_JudiNewt_0287-130x90.jpg 130w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></a><figcaption class="wp-element-caption">Stellafane memories: Judi with Al’s 12-inch Newtonian circa 1970s.</figcaption></figure> </div> <p>This year, despite Thursday’s intermittent cloud cover, we set up our equipment next to the McGregor Observatory. I used my trusty Tele Vue-76 and a range of Tele Vue eyepieces for some daytime observing while a filmmaker, Tara Zabriskie captured the moments for the “Stellafane and Beyond” documentary project.</p> <p>In the evening, visitors arrived at the McGregor Observatory to enjoy views through the 13″ Schupmann telescope, one of the world’s largest. Outside the observatory, we offered them views of the North American Nebula, Lagoon, and Trifid Nebulae through the much smaller Tele Vue-76. However, with the TNVC PVS-14 night vision monocular on the eyepiece, the night vision views through the Tele Vue-76’s 3″ objective were comparable to that of a 9″ scope. People were really impressed with this sight, and we also did some heavenly gazing through the night vision device hand-held at 1x power. The amount of visible nebulosity without connecting the device to a telescope surprised many. Unfortunately, the following nights were not suitable for observing. However, there was one night where I managed to mount the PVS-14 onto a 16″ Newtonian for some very impressive views despite the weather.</p> <p>Stellafane is not just about the telescopes and hardware; it’s also about the people. Judi says, “it’s nice seeing people you haven’t seen in a while.” Many individuals make the yearly pilgrimage to Breezy Hill, including Dennis di Cicco (writer / editor / asteroid hunter) and Joe Rao (on-camera meteorologist / Space.com columnist). Judi, and I also had the pleasure of meeting with Cecilia Detrich, President of STM, several times throughout the event. Cecilia’s contributions to the field are truly inspiring.</p> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Stellafane People</strong></p> <p>Cecilia built an 8″ f/5.5 Dobsonian Newtonian 13-years ago to qualify for full membership and previously served as Vice President and in other positions. Coincidently, she won the Tele Vue Plössl and DeLite raffle prize bag at this year’s Stellafane. I also met her daughter Katie Shusdock, who became a full member after building a 6″ f/8 Newtonian mirror at age of 12. She currently serves on the STM board as a Director and has multiple roles at Stellafane including registrar, judge, and organizer of the telescope making workshops.</p> </div> <figure class="wp-block-image alignright size-full"><a href="https://stellafane.org/convention/2024/2024-saturnday.html" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="228" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/SaturnDayCover.jpg" alt="" class="wp-image-1095" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SaturnDayCover.jpg 228w, https://televue.com/televueopticstalk/wp-content/uploads/SaturnDayCover-114x150.jpg 114w" sizes="auto, (max-width: 228px) 100vw, 228px" /></a></figure> <p>Saturday was a busy day. That afternoon, I really enjoyed the “Open Clusters and Stellar Associations” talk by Larry Mitchell, Chairman of the Texas Star Party Advanced Observing Program. The evening program included the raffle drawing (that featured four sets of Tele Vue eyepieces with a total value over $7,000), telescope award presentations, the President’s speach, and the keynote address. It was a wonderful experience when Cecilia, after reading her President’s speech, called me up to the stage and read my “Saturnday” essay. The response from the audience was overwhelmingly positive, and at that moment, I took the microphone to thank them. It’s these singular moments at events like Stellafane that make the experience truly special and memorable – experiences that are now permanently posted as a link on the <a href="https://stellafane.org/convention/2024/" target="_blank" rel="noreferrer noopener">2024 Convention</a> summary page.</p> <p>Next, Tony Hull took the stage as the keynote speaker. He charmed the audience and quite humorously included impromptu references to “Saturnday” during his talk. He shared his journey from being an Amateur Telescope Maker at Stellafane to eventually becoming the Program Manager for Optical Fabrication of the James Webb Space Telescope.</p> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1048" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-1048x800.jpg" alt="" class="wp-image-81523" style="width:900px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-1048x800.jpg 1048w, https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-524x400.jpg 524w, https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-150x115.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-768x586.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-1536x1173.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/Al-with-Stellafane-Prizes-2024-2048x1563.jpg 2048w" sizes="auto, (max-width: 1048px) 100vw, 1048px" /></a><figcaption class="wp-element-caption">Stellafane 2024: Al Nagler at the prize booth.</figcaption></figure> <p>A final thought…I was particularly encouraged by the presence of many young attendees who were also recognized and awarded prizes. It’s inspiring to think that they might become regular attendees and come to see the trip to Springfield, Vermont, as a journey back home.</p> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>Looking back at the “Best of 2023”</title> <link>https://televue.com/televueopticstalk/2024/07/17/looking-back-at-the-best-of-2023/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Wed, 17 Jul 2024 20:52:11 +0000</pubDate> <category><![CDATA[Astro Image]]></category> <category><![CDATA[History]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[best of 2023]]></category> <category><![CDATA[blog]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81400</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/07/17/looking-back-at-the-best-of-2023/" title="Looking back at the “Best of 2023”" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>We're in the middle of 2024 already (quo tempore fugit!) making this a good time for a retrospective look at our most popular blogs of 2023. Que the harp music ...]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/07/17/looking-back-at-the-best-of-2023/" title="Looking back at the “Best of 2023”" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_TopBlog2023.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p>We’re in the middle of 2024 already (<em>quo tempore fugit!</em>) making this a good time for a retrospective look at our most popular blogs of 2023. Que the harp music …</p> <p><strong>Top User Profile Blog Posts</strong><br>Our most popular blogs featured Tele Vue owners and how they use our products.</p> <p>One of the more popular user profile blogs was <a href="https://televue.com/televueopticstalk/2023/06/14/tele-vue-np127is-imaging-the-skies-over-southern-poland/" target="_blank" rel="noreferrer noopener">Tele Vue-NP127is Imaging the Skies over Southern Poland!</a> which tells the story of how Jan Bielański selected and now uses the Tele Vue-NP127is Nagler-Petzval APO refractor.</p> <p class="indquotgren">“After two weeks of reading, analyzing, and thinking, I made the best decision I could: to sell all of my telescopes and buy the TeleVue-NP127is. During the first several months, I used the scope visually while waiting for the Tele Vue LCL-1069 Wide-Field Corrector and some additional connectors which would allow it to achieve a perfect imaging configuration. Visually, it leaves other scopes with similar aperture far behind.”</p> <p>We looked forward to see more of his images on <a href="https://www.astrobin.com/users/JanBielanski/" data-type="link" data-id="https://www.astrobin.com/users/JanBielanski/" target="_blank" rel="noreferrer noopener">AstroBin</a>.</p> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="705" src="https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB.jpg" alt="" class="wp-image-79973" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB-613x400.jpg 613w, https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB-150x98.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/JB-NGC7023-vdB139-RGB-768x501.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/vloek6/H/" target="_blank" rel="noopener">NGC7023 (vdB139) – RGB</a> by AstroBin user <a href="https://www.astrobin.com/users/JanBielanski/" target="_blank" rel="noopener">Jan Bielański</a>. All rights reserved. Used by permission. Imaged through Tele Vue TV-NP127is Nagler/Petzval APO refractor with Tele Vue LCL-1069 Large Field Corrector, through QHYCCD QHY600PH M camera using an iOptron CEM60EC mount. Exposure through Red, Green, and Blue Baader (CMOS-Optimized) 50 mm filters for: 24×300sec each. Total Integration: 10h 30m. From home observatory, Sidzina, Małopolska, Poland. Software used was: INDI Library Ekos · Open PHD Guiding Project PHD2 · Patrick Chevalley Cartes du Ciel · Patrick Chevalley CCDciel · Pleiades Astrophoto PixInsight · Russell Croman Astrophotography BlurXTerminator · Russell Croman Astrophotography NoiseXTerminator · Russell Croman Astrophotography StarXTerminator.</figcaption></figure> <p>Another top user profile was <a href="https://televue.com/televueopticstalk/2023/07/12/catching-up-linwood-fergusons-np101is/" target="_blank" rel="noreferrer noopener">Catching Up: Linwood Ferguson’s NP101is</a> — an update to a 2021 blog post about Linwood’s imaging efforts from southwest Florida with the Tele Vue-NP101is telescope. We were happy to see that Linwood continued to present compelling astro-images for all to enjoy. We wished him the best of luck on his future imaging endeavors.</p> <figure class="wp-block-image size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1200" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-1200x800.jpg" alt="" class="wp-image-80164" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-1200x800.jpg 1200w, https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-600x400.jpg 600w, https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-150x100.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-768x512.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848-1536x1024.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/Soul-in-SHO-with-RGB-Stars-IC-1848.jpg 1620w" sizes="auto, (max-width: 1200px) 100vw, 1200px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/i2jf7f/0/" target="_blank" rel="noopener">Soul in SHO with RGB Stars (IC 1848)</a> by AstroBin user <a href="https://www.astrobin.com/users/Linwood/" target="_blank" rel="noopener">Linwood Ferguson</a>. All rights reserved. Used by permission. Imaging details: the Tele Vue-NP101is APO (Nagler-Petzval) refractor (101mm, f/5.4), with a ZWO ASI6200MM Pro camera was riding an Astro-Physics 1100GTO-AE mount. Exposures on the nebula were as follows through Chroma 50mm (5nm bandpass) narrowband filters: H-alpha: 106×300s, OIII: 95×300s, and SII: 103×300 for a total of: 25h 20s. Additional exposures to get natural looking stars were through Chroma 2in Red, Green, & Blue filters of 24x30s each for a total of 36m. Imaged from backyard in Fort Myers, Florida. Software used: Pleiades Astrophoto PixInsight · Russell Croman Astrophotography StarXTerminator · Stefan Berg Nighttime Imaging ‘N’ Astronomy (NINA). </figcaption></figure> <p>Also tops was a user profile and travelogue: <a href="https://televue.com/televueopticstalk/2023/04/26/tele-vue-eyepieces-in-irish-skies/" target="_blank" rel="noreferrer noopener">Tele Vue Eyepieces in Irish Skies</a> about Pat Rochford’s trip from Alabama to the Emerald Isle in 2023. “On January 17th my wife, Stephanie, and I departed the Alabama Gulf Coast for the west of Ireland, near the tiny town of Kilshanny in County Clare. A two-hundred-year-old cottage, less than three miles from the Atlantic Ocean, would be our home for the next nine weeks.” He also packed along a mini 6″ f/5 Dobsonian with the following Tele Vue optics: 24mm Panoptic, 11mm Nagler Type-6, 7mm Nagler, Tele Vue 3x and 2.5x Barlows, plus 1.00 DIOPTRX astigmatism corrector. As explained in the blog, building the custom scope and case to bring on the plane was major part of the trip.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1067" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm-1067x800.jpg" alt="" class="wp-image-79781" srcset="https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm-1067x800.jpg 1067w, https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm-533x400.jpg 533w, https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm-150x113.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm-768x576.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/150-at-Grange-Stone-Circle_sm.jpg 1440w" sizes="auto, (max-width: 1067px) 100vw, 1067px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1022" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm-1022x800.jpg" alt="" class="wp-image-79768" srcset="https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm-1022x800.jpg 1022w, https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm-511x400.jpg 511w, https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm-150x117.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm-768x601.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/150mm-in-pieces-sm.jpg 1380w" sizes="auto, (max-width: 1022px) 100vw, 1022px" /></a></figure> </div> </div> <p class="cust_caption_colormag">Left: tiny 6″ f/5 Dobsonian sitting on its rocker box with a Nagler eyepiece in the holder. All breaks down to fit into a custom 22” x 14” x 9” case. Right: unassembled scope, rocker box, with Sky Commander DSC. On the right are Tele Vue eyepieces, Barlows, and Dioptrx.</p> <figure class="wp-block-image alignright clearRight"><a href="https://televue.com/televueopticstalk/wp-content/uploads/CORYD_NV_M31_cutout_400.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="400" height="400" src="https://televue.com/televueopticstalk/wp-content/uploads/CORYD_NV_M31_cutout_400.gif" alt="" class="wp-image-78932"/></a><figcaption class="wp-element-caption"><a href="https://www.instagram.com/p/Clv0VYNrBXb/" target="_blank" rel="noopener">Adopted from Andromeda galaxy, M32 and M110 real time with night vision to telescope</a> by Instagram user <a href="https://www.instagram.com/telescopeboss/" target="_blank" rel="noopener">Corey Dallmeyer</a>. All rights reserved. Used by permission. Taken with PVS-14 Gen 3, filmless, white phosphor night vision monocular on eyepiece connected to Orion SkyQuest XX16G Dob. Video taken through Samsung Galaxy A71 smartphone.</figcaption></figure> <p>Pat and his wife are so enthralled with Ireland that they returned this February “on a whim” to attend the Russell Music Festival in Doolin!</p> <p class="clearLeft">A tour of the heavens from the bright skies of Chicago to the rural/suburban skies of Virginia through night vision eyes was found in our <a href="https://televue.com/televueopticstalk/2022/12/20/night-vision-astronomy-from-bortle-9-4-skies/" target="_blank" rel="noreferrer noopener">Night Vision Astronomy from Bortle 9 & 4 Skies!</a> − another very popular blog posting. Darren Drake told us that with night vision he is able to view such targets as the Horsehead nebula from his “horrendous Chicagoland Bortle 9 backyard. His impression is that the TNVC PVS-14 on the eyepiece virtually boosts the scope diameter to act as if it has a 2.5x larger mirror. That’s like suddenly being able to view stars 6¼x dimmer than before!</p> <p class="clearLeft">This blog also relates how Corey Dallmeyer is working with night vision under Bortle 4 skies in Virginia. His social media contains resources for PVS-14 users in astronomy. We link to some of these on the blog post including <em>Everything I Use for Night Vision Astronomy</em> and <em>H Alpha Filters For Night Vision Astronomy: 6 Filters Compared</em>.</p> <p><strong>Top Hardware Blog Posts</strong><br>Blog postings relating to hardware also did well with our readers.</p> <p>Our highly viewed <a href="https://televue.com/televueopticstalk/2023/08/16/pixel-peeping/" data-type="link" data-id="https://televue.com/televueopticstalk/2023/08/16/pixel-peeping/" target="_blank" rel="noreferrer noopener">PIxel Peeping</a> blog — an introduction to image sampling and associated concepts — was based on our experience viewing countless image corners. It proved very popular with the readership. The last part of <em>Pixel Peeping</em> dealt with optical and hardware problems. We believe it is required reading for anyone seeking to work out the “bugs” in their imaging systems. Another popular hardware blog was <a href="https://televue.com/televueopticstalk/2023/01/27/2023-tele-vue-product-anniversaries/" target="_blank" rel="noreferrer noopener">2023 Tele Vue Product Anniversaries</a> — celebrating the significant anniversary year for current Tele Vue products in 2023. Also highly viewed was our new product announcement: <em><a href="https://televue.com/televueopticstalk/2023/03/17/new-product-announcement-npr-2073-0-8x-reducer-for-tele-vue-np101is-and-np127is-scopes/" target="_blank" rel="noreferrer noopener">NPR-2073 0.8x Reducer for Tele Vue NP101is and NP127is</a>. </em>This constitutes the latest addition to our line of Imaging System products designed to work with our Tele Vue-NP101is and Tele Vue-NP127is scopes. NPR-2073 is a reducer that minimizes vignetting with camera sensors up to 43mm diagonal (Full Frame) and is a replacement for the previous 0.8x reducer, the discontinued NPR-1073 (which worked best up to APS-C sensors). When combined with a Tele Vue Petzval-type telescope, NPR-2073 reduces the focal length of the telescope by 20% and makes it that much faster. This increases the telescope’s field of view by 25%. </p> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="2000" height="1910" src="https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl.jpg" alt="" class="wp-image-79612" style="width:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl.jpg 2000w, https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl-419x400.jpg 419w, https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl-838x800.jpg 838w, https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl-150x143.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl-768x733.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/NPR_2073_0.8x-Reducer-for-NP-Telescopes-full-frame_obl-1536x1467.jpg 1536w" sizes="auto, (max-width: 2000px) 100vw, 2000px" /></a><figcaption class="wp-element-caption">Model NPR-2073 0.8x Reducer for NP Scopes</figcaption></figure> <p>The ultimate hardware blog was our <a href="https://televue.com/televueopticstalk/2023/04/20/2023-neaic-neaf-in-review/" data-type="link" data-id="https://televue.com/televueopticstalk/2023/04/20/2023-neaic-neaf-in-review/">2023 NEAIC & NEAF in Review</a> post. The <em>Northeast Astro-Imaging Conference</em> (<a href="https://www.neafexpo.com/neaic" target="_blank" rel="noreferrer noopener">NEAIC</a>) and <em>Northeast Astronomy Forum</em> (<a href="https://www.neafexpo.com/" data-type="link" data-id="https://www.neafexpo.com/" target="_blank" rel="noreferrer noopener">NEAF</a>) were our first in-person shows in America since the pre-pandemic year of 2019. If you’re in the New York City metro area this show is for you! Even if you need to travel to get there it is worth it. We bring every single item on our product list and are happy to discuss how best to use them.</p> <p><a href="https://televue.com/televueopticstalk/2023/10/18/each-tele-vue-telescope-explained-in-one-image/" target="_blank" rel="noreferrer noopener">Each Tele Vue Telescope Explained in ONE Image</a> was the top blog post published in 2023. We wrote: “No single telescope is best for every application, that’s why our all-APO refractor lineup has a range of scopes of various sizes. All are visual and imaging capable to suit your whims. In this blog we’ll take a tour of Tele Vue’s refractor offerings through sample images made by each model.”</p> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1122" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark-1122x800.jpg" alt="!! DARK SHARK !! LBN1235 in RGB" class="wp-image-80523" style="width:700px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark-1122x800.jpg 1122w, https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark-561x400.jpg 561w, https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark-150x107.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark-768x547.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/NP127is_DPayne_DarkShark.jpg 1515w" sizes="auto, (max-width: 1122px) 100vw, 1122px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/d7b0pd/B/" target="_blank" rel="noopener">!! DARK SHARK !! LBN1235 in RGB</a> by AstroBin user <a href="https://www.astrobin.com/users/Gunshy61/" target="_blank" rel="noopener">David Payne</a>. All rights reserved. Used by permission. Tele Vue-NP127is Nagler/Petzval APO refractor with ZWO ASI6200MM Pro camera carried on Astro-Physics 1100GTO-AE mount. Exposure through Antlia Pro LRGB filters as follows: Luminance at 90 x 180s exposures and Red, Green, and Blue each at 65 x 180s exposures for a total integration of 14.25 hours.</figcaption></figure> <p><strong>Beautiful Image Blog Posts</strong><br>These top-posts contained great images made with Tele Vue gear.</p> <p><a href="https://televue.com/televueopticstalk/2023/03/22/paracorr-type-2-image-of-the-day/" data-type="link" data-id="https://televue.com/televueopticstalk/2023/03/22/paracorr-type-2-image-of-the-day/" target="_blank" rel="noreferrer noopener">Paracorr Type-2: Image of the Day!</a> blog showcased<em> AstroBin Image of the Day </em>(IOTD) winners that employed Tele Vue Paracorr coma corrector on their fast Newtonian imaging telescopes. AstroBin’s Image of the Day and Top Picks is designed to “promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence.” One imager that has received the IOTD laurels multiple times is Phil Brewer using his Paracorr equipped 8″ f/4 carbon-tube. He says the following:</p> <p class="indquotgren">“I was previously using a competitor’s product. While imaging I has serious problems with strange flat field artifacts in my images. I tried everything I could think of to fix it and literally spent years struggling with it. I finally broke down and bought the Paracorr and the problem immediately went away. It was apparently bad internal reflections or something from the competitor’s coma corrector. So you have at least one happy customer.”</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1225" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-1225x800.jpg" alt="" class="wp-image-79515" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-1225x800.jpg 1225w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-613x400.jpg 613w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-150x98.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-768x501.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer-1536x1003.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/Paracorr-on-8inch_photo_Wolf-Rayet-134_AstroBin_Phil-Brewer.jpg 1654w" sizes="auto, (max-width: 1225px) 100vw, 1225px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/6z38ql/" target="_blank" rel="noopener">Wolf-Rayet 134</a> by AstroBin user <a href="https://www.astrobin.com/users/pbkoden/" target="_blank" rel="noopener">Phil Brewer</a>. All rights reserved. Used by permission. This was the AstroBin Image of the day for 29 June 2022. TS-Optics 200mm/8″” ONTC f/4 Newtonian with Tele Vue 2″” Paracorr Type-2 (VIP-2010) coma corrector, and QHYCCD QHY268M camera. Guiding Camera was QHYCCD QHY5L-IIM.<br>Imaged through Chroma Red, Green, Blue and 3nm Hα and OIII narrowband filters as follows: Blue: 22×180″, Green: 22×180″, H-alpha: 70×600″, OIII: 63×600″, Red: 22×180″.<br>Software used was GNU Image Manipulation Program (GIMP), Pleiades Astrophoto PixInsight, and Russell Croman Astrophotography StarXTerminator. Taken from Ida, Michigan.</figcaption></figure> <p>Want to really understand the structure and composition of an astronomical object? Then try sketching it! In the <a href="https://televue.com/televueopticstalk/2023/09/06/sketching-the-universe/" data-type="link" data-id="https://televue.com/televueopticstalk/2023/09/06/sketching-the-universe/" target="_blank" rel="noreferrer noopener">Sketching the </a><a href="https://televue.com/televueopticstalk/2023/09/06/sketching-the-universe/" data-type="link" data-id="https://televue.com/televueopticstalk/2023/09/06/sketching-the-universe/">Universe!</a> blog post we said that “the beauty of sketching at the eyepiece is that it leads to a more intimate knowledge of the object and the star field around and within it.” Our readers were enthralled enough to propel this blog post to a top-spot among the most read blogs of 2023. It features astronomical sketches made with Tele Vue eyepieces, Paracorr, and even the PVS-14 night vision monocular.</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch.jpeg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="800" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch-800x800.jpeg" alt="" class="wp-image-80339" srcset="https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch-800x800.jpeg 800w, https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch-400x400.jpeg 400w, https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch-150x150.jpeg 150w, https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch-768x768.jpeg 768w, https://televue.com/televueopticstalk/wp-content/uploads/MStraub-ngc-5139-31-Nag_sketch_Omega-Centauri_twitter_deepskysketch.jpeg 1000w" sizes="auto, (max-width: 800px) 100vw, 800px" /></a><figcaption class="wp-element-caption"><a href="https://deepskysketch.com/portfolio/comparing-caldwell-globular-clusters/" target="_blank" rel="noopener">Omega Centauri</a> by deepskysketch user <a href="https://deepskysketch.com/about-martijn-straub/" target="_blank" rel="noopener">Martijn Straub</a>. All rights reserved.. Sketched with a 16″ f/4.5 Dieter Martini Newtonian at 58x with Tele Vue 31mm Nagler Type-5 eyepiece from Namibia.</figcaption></figure> <p></p> <div class="wp-block-group TVBlackBox clearBoth is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>Your 8 April 2024 Solar Eclipse Images!</title> <link>https://televue.com/televueopticstalk/2024/05/09/your-8-april-2024-solar-eclipse-images/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Thu, 09 May 2024 19:38:38 +0000</pubDate> <category><![CDATA[Sky Events]]></category> <category><![CDATA[Telescope]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[Solar]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81322</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/05/09/your-8-april-2024-solar-eclipse-images/" title="Your 8 April 2024 Solar Eclipse Images!" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>In the days before the April 8, 2024 North American Eclipse, eclipsophiles panicked when Texas skies were predicted to be]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/05/09/your-8-april-2024-solar-eclipse-images/" title="Your 8 April 2024 Solar Eclipse Images!" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/featured_SolarEclipse2024.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p>In the days before the April 8, 2024 North American Eclipse, eclipsophiles panicked when Texas skies were predicted to be cloudy while the extreme Northeast stayed clear. This was the opposite of the long-term forecast used by many to plan their eclipse trip. Choosing a new observing site also meant a change in totality duration, with those going east losing a minute compared to locations near the Texas/Mexican border.</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1400" height="642" src="https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-1400x642.jpg" alt="" class="wp-image-81336" srcset="https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-1400x642.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-700x321.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-150x69.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-768x352.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar-1536x705.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/NASA-Eclipse-Path-2024-April-8-Total-Solar.jpg 1567w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /></a><figcaption class="wp-element-caption">April 8, 2024 Total Eclipse Path (credit: NASA).</figcaption></figure> <p>This blog chronicles some Tele Vue telescope owner’s attempts at capturing totality, including the Corona, Bailey Beads, and Diamond Ring effect.</p> <p><strong>Tele Vue-NP101is in Northern Maine</strong><br>Paul Cyr didn’t have to travel far to find this perfect place. From his farm in northern Maine, which had the best weather in the U.S. for this event, he was perfectly positioned for imaging. This set of images around and past totality were taken with a Tele Vue-NP101is (540mm at f/5.4) Nagler-Petzval APO refractor and Nikon Z8 full-frame mirrorless camera.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="824" height="659" src="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01.jpg" alt="" class="wp-image-81318" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01.jpg 824w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01-500x400.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01-150x120.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond01-768x614.jpg 768w" sizes="auto, (max-width: 824px) 100vw, 824px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="824" height="659" src="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02.jpg" alt="" class="wp-image-81319" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02.jpg 824w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02-500x400.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02-150x120.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond02-768x614.jpg 768w" sizes="auto, (max-width: 824px) 100vw, 824px" /></a></figure> </div> </div> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="824" height="659" src="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03.jpg" alt="" class="wp-image-81320" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03.jpg 824w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03-500x400.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03-150x120.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond03-768x614.jpg 768w" sizes="auto, (max-width: 824px) 100vw, 824px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="824" height="659" src="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04.jpg" alt="" class="wp-image-81321" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04.jpg 824w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04-500x400.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04-150x120.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/PaulCyr_8April2024_TotalityBeadsDiamond04-768x614.jpg 768w" sizes="auto, (max-width: 824px) 100vw, 824px" /></a></figure> </div> </div> <p class="cust_caption_colormag"><a href="Master_MediaTeleVue_Blog_Specific_ImagesBlogIdeas_Images2024Eclipse" target="_blank" rel="noopener">Total Solar Eclipse Around Totality</a> by Facebook user <a href="https://www.facebook.com/profile.php?id=100044399080545" target="_blank" rel="noopener">Paul Cyr</a>. All rights reserved. Used by permission. Top, (L/R): Sun in Totality with red prominence visible along the solar limb. Sun begins to emerge behind the Moon after 3rd contact. Bottom, (L/R): Double-diamond ring effect as sunlight streams through valleys on the Moon. In the final frame a big diamond ring begins to hide prominence. These images were taken with a Tele Vue-NP101is (540mm at f/5.4) Nagler-Petzval APO refractor with Nikon Z8 full-frame mirrorless camera at 1/5000s and ISO 1600.</p> <p><strong>Tele Vue-85 in Central Arkansas</strong><br>Greg Mitchum setup the following photographs a few miles east of Atkins, Arkansas, at the south end of the Union Grove Church parking lot. “Apparently, about 50+ people had the same idea from all over the country including, Oklahoma, Arkansas, Tennessee, Oregon , Alabama, Minnesota, and even Norway (I heard)”.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="640" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum-640x800.jpg" alt="" class="wp-image-81326" srcset="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum-640x800.jpg 640w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum.jpg 720w" sizes="auto, (max-width: 640px) 100vw, 640px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="641" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1-641x800.jpg" alt="" class="wp-image-81327" srcset="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1-641x800.jpg 641w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set1.jpg 720w" sizes="auto, (max-width: 641px) 100vw, 641px" /></a></figure> </div> </div> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="641" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2-641x800.jpg" alt="" class="wp-image-81328" srcset="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2-641x800.jpg 641w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2-768x959.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set2.jpg 1033w" sizes="auto, (max-width: 641px) 100vw, 641px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="641" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3-641x800.jpg" alt="" class="wp-image-81329" srcset="https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3-641x800.jpg 641w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/GregMitchum_set3.jpg 720w" sizes="auto, (max-width: 641px) 100vw, 641px" /></a></figure> </div> </div> <p class="cust_caption_colormag"><a href="https://www.instagram.com/p/C5j2cN9pEgY/" target="_blank" rel="noopener">Solar Eclipse 2024</a> by Instagram user <a href="https://www.instagram.com/greg_mitchum/" target="_blank" rel="noopener">Greg Mitchum</a>. All rights reserved. Used by permission. Imaged with Tele Vue-85 APO refractor using Canon 6D full-frame camera and all mounted on the portable Tele Vue Tele-Pod tripod. Top (L/R): First image was captured right before totality and the next just seconds before the end of totality. Bottom (L/R): The limb of the Sun emerges. In the next image Baily’s beads “explode” through the lunar valleys and are forming a diamond ring.</p> <p><strong>Tele Vue Ranger in Northern Vermont</strong><br>The town of Newport, in the northeast corner of Vermont, is just a stones-throw from Canada. Over 10,000 people gathered along the shores of Lake Memphremagog to view the event. Among them was author Ruben Kier (“The 100 Best Astrophotography Targets”, a Monthly Guide, @StardoctorOrg on YouTube) who recorded the following through a Tele Vue Ranger telescope. It is a concise video showing phases, Diamond ring, Baily Beads, and Totality.</p> <figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper"> <iframe loading="lazy" title="Total Solar Eclipse And Diamond Ring 2024, Newport, Vermont #stardoctor #eclipse #solar #diamondring" width="800" height="600" src="https://www.youtube.com/embed/kgqo0cAtrCE?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> </div></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Meet the Tele Vue Refractors<em>!</em></strong></p> <figure class="wp-block-image size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="974" height="456" src="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear.png" alt="" class="wp-image-77340" style="width:700px;height:328px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear.png 974w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear-700x328.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear-150x70.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b_eclear-768x360.png 768w" sizes="auto, (max-width: 974px) 100vw, 974px" /></a></figure> <p><strong>Heirloom Quality Build</strong><br>What makes our scopes so uniquely “Tele Vue” is the hand-built nature of each instrument to achieve top-tier optical quality. Each scope is assembled from beginning to end by one person. There are no assembly lines or quotas in our manufacturing process. Optical and mechanical components are inspected, fitted, assembled, aligned, and scrutinized so the end result is a telescope that is as good as we can possibly make. This includes multi-coated objectives that are individually spaced and rotated into position within the telescope lens cell and hand-fitted focusers for silky-smooth, lash-free focusing that resists sagging. The finish includes hard powder-coated tubes and oxidation-resistant anodized aluminum. These finishing touches make our scopes rugged and easily transported to dark-sky locations. Tele Vue telescopes are engineered and built to be your life-long observing companions; and someday, your kids’ as well. All Tele Vue telescopes come with a 5-year Limited Warranty.</p> <p><strong>Rich Field</strong><br>Every Tele Vue refractor, from the Tele Vue-60 to the 5″ Tele Vue-NP127is, can give at least a 4° field with our low power eyepieces. Wide enough to easily image the solar corona. This eliminates the need for magnifying finders. Instead, use our unit-power <a href="http://bit.ly/TVOStarbeamBkFull" target="_blank" rel="noreferrer noopener">StarBeam </a>(<a href="http://bit.ly/TVOStarbeamMobile" target="_blank" rel="noreferrer noopener">mobile </a>site) with flip-mirror to comfortably aim the scope in the vicinity of the object you are searching for.</p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="1400" height="686" src="https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-1400x686.png" alt="" class="wp-image-5425" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-1400x686.png 1400w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-150x74.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-700x343.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-768x376.png 768w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-500x245.png 500w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2-1200x588.png 1200w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_Profile_2.png 1469w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /></a><figcaption class="wp-element-caption">Al Nagler calls the Tele Vue-85 a “Goldilocks” telescope. With an 85mm diameter, 600mm focal length, f/7, APO objective and 2″ capability, its combination of optical performance and airline portability is “just right.” </figcaption></figure> <p><strong>Tele Vue Small Doublet APO Refractors</strong><br>For the Tele Vue-60, -76, and -85mm scopes, we met our goal to achieve apochromatic performance in as compact a package as possible. Since we could achieve the desired optical performance using a doublet design, including two more air-to-glass surfaces to create a triplet would have added additional weight in the wrong place, plus assembly and material costs with little performance benefit to the end-user.</p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="1400" height="649" src="https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-1400x649.png" alt="" class="wp-image-5424" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-1400x649.png 1400w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-150x70.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-700x325.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-768x356.png 768w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-500x232.png 500w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2-1200x556.png 1200w, https://televue.com/televueopticstalk/wp-content/uploads/TVNP101is_Profile_2.png 1553w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /></a><figcaption class="wp-element-caption">This 101mm diameter objective, 540mm focal length, f/5.4, APO (4-elements in 2-groups, Nagler-Petzval) refractor has an OTA length of 25.5″ without diagonal. </figcaption></figure> <p class="clearBoth"><strong>Tele Vue Large Nagler-Petzval APO Refractors</strong><br>The 4-element objective designs of the NP101is and NP127is consist of two widely spaced, air-spaced doublets. It is a misnomer to think of these designs as a “doublet objective with a built-in field flattener” as the rear group of the objective is in considerable power-space and corrects the uncorrected aberrations of the front group. This configuration, along with the chosen glasses, was necessary to achieve the desired aberration control at the exceedingly fast f/5.4 and f/5.2 focal ratios. Why so fast? In order to obtain as wide a true field both visually and for imaging, we chose as short a focal length as possible for which we could meet the desired correction of axial and lateral color, spherochromatism, astigmatism, coma, and field flatness. No triplet design regardless of configuration can meet all these criteria.</p> <p><strong>More Info</strong></p> <ul class="wp-block-list"> <li>Read our <a href="https://televue.com/televueopticstalk/2019/08/08/tele-vue-apo-design-and-build-secrets/" target="_blank" rel="noreferrer noopener">Tele Vue APO Design and Build “Secrets”</a> blog post for more on the assembly and test that makes Tele Vue scope special.</li> <li>All Tele Vue telescopes come with a <a href="http://bit.ly/TVOYTVSCOPE" target="_blank" rel="noreferrer noopener">5-year Limited Warranty</a></li> </ul> </div> <p><strong>Tele Vue-85 on Lake Champlain</strong><br>Crown Point State Historic site on the New York side of Lake Champlain is known for the preserved remains of “His Majesty’s Fort at Crown Point”. Throughout the 1700s, control over this point, overlooking a 2,000-foot narrows to Chimney Point, Vermont, was contested by the British, French, and American Revolutionaries.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><img loading="lazy" decoding="async" width="1400" height="702" src="https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-1400x702.jpg" alt="" class="wp-image-81340" srcset="https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-1400x702.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-700x351.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-150x75.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-768x385.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-1536x770.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_ViewFromEarthworks-2048x1026.jpg 2048w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /><figcaption class="wp-element-caption">Lake Champlain from Crown Point Historic Site by Pietro Carboni. All rights reserved. Used by permission. Crown Point State Historic site, early on eclipse day. Photographed from the top of the earthworks. In the background is the new Lake Champlain Bridge that connects Crown Point, NY with Vermont – visible across the water.</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><img loading="lazy" decoding="async" width="1400" height="756" src="https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-1400x756.jpg" alt="" class="wp-image-81339" srcset="https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-1400x756.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-700x378.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-150x81.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-768x415.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks-1536x829.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/CrownPoint_barracks.jpg 2001w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /><figcaption class="wp-element-caption">Earthworks and barracks at Crown Point Historic Site. by Pietro Carboni. All rights reserved. Used by permission. Earthworks surround the stone barracks and parade field. The tallest features standing are the chimneys.</figcaption></figure> </div> </div> <p>For the April 8, 2024 eclipse, it was an officially designated observing area inside the band of totality. As you can see in the above photos, the sky was clear with thin clouds not bothersome enough to ruin the show. This turned out to be a much better location than the long-term forecasts had predicted. Early-birds were able to park in the small asphalt parking spaces while the vast majority of people were directed to park on designated grassy areas. With the partial phase not commencing until 2:13 PM that day, there was plenty of time for visitors to walk through history and visit the museum on site. Many choose to take a walk to Vermont over the modern Lake Champlain Bridge.</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="800" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-800x800.jpg" alt="Totality at Crown Point, NY by Pietro Carboni. All rights reserved. Used by permission." class="wp-image-81381" srcset="https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-800x800.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-400x400.jpg 400w, https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-150x150.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-768x768.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit-1536x1536.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/07-Calibrated-32bit-Aligned.MeanBlend-Square-flat-original-16bit.jpg 1891w" sizes="auto, (max-width: 800px) 100vw, 800px" /></a><figcaption class="wp-element-caption">Totality at Crown Point, NY by Pietro Carboni. All rights reserved. Used by permission. Tele Vue-85 APO refractor telescope with Tele Vue TRF-2008 0.8x Reducer/Flattener and Sony Alpha II mirrorless full frame camera was used with the solar filter removed to take a series of exposures at totality. Images where then flat and bias corrected in Deep Sky Stacker before stacking and finishing in Photoshop.</figcaption></figure> <p>The heart of the image setup at Crown Point, NY, was the Tele Vue-85 APO refractor telescope (600mm @ f/7). Equipped with the Tele Vue TRF-2008 0.8x Reducer/Flattener, this scope became a 480mm f/5.6 flat-field lens. The attached camera was a Sony Alpha II mirrorless with full-frame sensor. A Tele Vue Sol-Searcher Sun-finder assisted in tracking the Sun using the slow-motion controls on the Alt-Az mount. Over the scope’s dew shield, a DIY filter box with Baader AstroSolar Filter Film was used to attenuate the Sun’s rays so that eclipse progressive could be tracked by the camera.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-4 column2-desktop-grid__start-8 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1400" height="688" src="https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-1400x688.jpg" alt="" class="wp-image-81341" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-1400x688.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-700x344.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-150x74.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-768x378.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm-1536x755.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/TV85_BaaderSolarFilm.jpg 1631w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /></a><figcaption class="wp-element-caption">Tele Vue-85 for Visual Solar Imaging by user Pietro Carboni.All rights reserved. Used by permission. Tele Vue-85 APO refractor telescope with Tele Vue TRF-2008 0.8x RedAll rights reserved. Used by permission. Tele Vue-85 APO refractor telescope with Tele Vue TRF-2008 0.8x Reducer/Flattener and Sony Alpha II mirrorless full frame camera. Baader AstroSolar Filter Film and Tele Vue Sol-Searcher Sun-Finder complete this portable solar setup.</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1062" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup-1062x800.jpg" alt="" class="wp-image-81342" style="object-fit:cover" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup-1062x800.jpg 1062w, https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup-531x400.jpg 531w, https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup-150x113.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup-768x578.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/TV85-SolSearcher_Closeup.jpg 1434w" sizes="auto, (max-width: 1062px) 100vw, 1062px" /></a><figcaption class="wp-element-caption">SolSearcher on Tele Vue-85 by Pietro Carboni. All rights reserved. Used by permission. Showing Tele Vue Sol-Searcher spotting the Sun.</figcaption></figure> </div> </div> <p>At totality, the filter box was removed in order to image the faint Corona —or Sun’s atmosphere. Images from 1/500s to 1/8000s were taken at two ISOs. These images were calibrated with flats and bias frames before stacking and processing created the final image.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-5 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-full"><img loading="lazy" decoding="async" width="464" height="399" src="https://televue.com/televueopticstalk/wp-content/uploads/ChampSightingsBoardPortionFromlakechamplainregion.com_.jpg" alt="" class="wp-image-81350" srcset="https://televue.com/televueopticstalk/wp-content/uploads/ChampSightingsBoardPortionFromlakechamplainregion.com_.jpg 464w, https://televue.com/televueopticstalk/wp-content/uploads/ChampSightingsBoardPortionFromlakechamplainregion.com_-150x129.jpg 150w" sizes="auto, (max-width: 464px) 100vw, 464px" /><figcaption class="wp-element-caption"> Portion of “Champ Sightings” sign in Port Henry, NY (credit: lakechamplainregion.com)</figcaption></figure> <p>Lake Champlain is also known for “Champ” the local “Lake Monster” that has been sighted on the 107-mile long freshwater body of water. With everyone in the area gazing up at the Sun, it would have been a good chance for Champ to surface and view totality without being noticed. </p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image alignright size-full is-resized"><img loading="lazy" decoding="async" width="400" height="400" src="https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w.png" alt="" class="wp-image-8324" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w.png 400w, https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w-150x150.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w-24x24.png 24w, https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w-48x48.png 48w, https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w-96x96.png 96w, https://televue.com/televueopticstalk/wp-content/uploads/punch-nasa-logo_400w-300x300.png 300w" sizes="auto, (max-width: 400px) 100vw, 400px" /></figure> <p class="TVOSidebar">The corona is a highly charged plasma that is much hotter than the surface of the Sun. How it gets it’s energy and the impact of the corona on the solar wind will be the subject of study by the PUNCH mission (Polarimeter to Unify the Corona and Heliosphere) of four microsats that will launch in 2025. Three satellites will carry camera lenses designed and built by Tele Vue to image the solar wind as it leaves the corona. This will “provide the first global images of how the solar corona infuses the solar wind with mass and energy” according to Southwest Research Institute (SwRI) in Boulder, CO. which is running the mission. You can read more about the mission on our <a href="https://televue.com/televueopticstalk/2021/05/19/tele-vue-scientific-part-1doing-science-with-tele-vue-optics/">TELE VUE SCIENTIFIC PART 1</a> blog post.</p> </div> </div> <div style="height:33px" aria-hidden="true" class="wp-block-spacer"></div> <p><strong>Tele Vue-NP101 from Harrisburg, IL</strong><br>William “Dr. Billy” Teets, the Director of the Vanderbilt Dyer Observatory in Brentwood, TN, relocated to the town of Harrisburg in southern Illinois to video the entire Total Eclipse in Hydrogen-alpha light. The result was over 2hr 36min of footage. Here is an explanation of the setup and how imaging was done.</p> <figure class="wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper"> <iframe loading="lazy" title="The 2024 Total Solar Eclipse in Hydrogen-Alpha" width="800" height="600" src="https://www.youtube.com/embed/kkmvK6V54_s?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> </div></figure> <p>The Tele Vue-NP101 was fitted with a SolarScope SF-100 etalon (and corresponding blocking filter). We used a ZWO ASI533MC Pro color camera for imaging, and the entire setup was mounted to a Vixen Sphinx equatorial mount. It is the instrument to the farthest right in the attached image of the setup, and we use this same setup for regular solar viewing at Dyer Observatory. Since we arrived at the site in Harrisburg, IL, mid-morning, I didn’t have an opportunity to get the mount really well polar aligned. But, as it would happen, the final placement gave a pretty good alignment, and I only had to make small adjustments over the duration of the eclipse to keep the Sun reasonably centered in the field of view. We had a similar setup but with a Hershel wedge to do white-light imaging, and two other telescopes provided similar views and were used for eyepiece viewing. </p> <figure class="wp-block-image alignright size-large is-resized"><img loading="lazy" decoding="async" width="1143" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-1143x800.jpeg" alt="" class="wp-image-81406" style="width:500px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-1143x800.jpeg 1143w, https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-571x400.jpeg 571w, https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-150x105.jpeg 150w, https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-768x538.jpeg 768w, https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large-130x90.jpeg 130w, https://televue.com/televueopticstalk/wp-content/uploads/IMG_0791-2-Large.jpeg 1280w" sizes="auto, (max-width: 1143px) 100vw, 1143px" /><figcaption class="wp-element-caption">Telescopes in Harrisburg, IL. Tele Vue-NP101 on Sphinx mount is the scope in front on the right. (credit: William Kenneth Teets)</figcaption></figure> <p>Sky conditions started out very cloudy with a very low ceiling. I figured the clouds would burn away once the Sun started warming everything; thankfully, they did. Seeing was pretty good. We had a few passing cirrus clouds every now and then, which is why some of the frames of the video change contrast dramatically despite my efforts to compensate for that. Temps were in the mid-70s, close to 80 by noon. Once we had reached about 50% coverage, it was a weird sensation to step out into the relatively bright sunlight but feel very little heat on your face – it felt more like stepping out under a really bright streetlight. By about 75% coverage, you couldn’t feel any heat on your skin from the direct sunlight. One other interesting aspect: The site we were at had a purple martin nest box, and the martins were flying around and singing quite a bit that morning. Once we started getting near totality, they began making their way back to the box. Once we were out of totality, they had returned to the sky after only a few minutes to resume their usual daily activity.</p> <figure class="wp-block-image aligncenter size-large is-resized"><img loading="lazy" decoding="async" width="824" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-824x800.png" alt="" class="wp-image-81407" style="width:700px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-824x800.png 824w, https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-412x400.png 412w, https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-150x146.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-768x746.png 768w, https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-1536x1491.png 1536w, https://televue.com/televueopticstalk/wp-content/uploads/halpha_10_5inch-2048x1989.png 2048w" sizes="auto, (max-width: 824px) 100vw, 824px" /><figcaption class="wp-element-caption">Sun in Hydrogen-Alpha by William Kenneth Teets. All rights reserved. Used by permission. Tele Vue NP101is with SolarScope SF-100 etalon (and corresponding blocking filter) using ZWO ASI533MC Pro color camera and all carried on a Vixen Sphinx mount.</figcaption></figure> <p>The video in the post was made from composite frames. Just as the eclipse began, the camera took a 15-second video at a longer exposure to pick up the prominences. It then took another 15-second video immediately after at a shorter exposure to get the details of the chromosphere. Once that was completed, there was a 30-second delay before the sequence was begun again and repeated for the duration of the eclipse. I think there were around 320 15-second videos total. Frames of the videos were stacked to get final images, which were then aligned to create short- and long-exposure videos. I then overlaid the videos in Adobe After Effects to create a composite video to show the chromosphere and prominences. </p> <div style="height:39px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-group TVBlackBox clearBoth is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #zwoasi174 #solareclipse</strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>2024 Sky Event Planner</title> <link>https://televue.com/televueopticstalk/2024/03/28/2024-sky-event-planner/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Thu, 28 Mar 2024 17:32:07 +0000</pubDate> <category><![CDATA[Sky Events]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[comet]]></category> <category><![CDATA[Eclipse]]></category> <category><![CDATA[events]]></category> <category><![CDATA[Moons]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=81190</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/03/28/2024-sky-event-planner/" title="2024 Sky Event Planner" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> Solar events dominate the year with a major total solar eclipse over the Americas coinciding with the peak of Solar Cycle 25. On the other side of Earth's terminator the nighttime sky features a brightening spring comet with hopes that other comets will brighten in summer and fall. ]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/03/28/2024-sky-event-planner/" title="2024 Sky Event Planner" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Events2024_FeaturedImage.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p><strong>Introduction</strong> <br>Solar events dominate the year with a major total solar eclipse over the Americas coinciding with the peak of Solar Cycle 25. On the other side of Earth’s terminator the nighttime sky features a brightening spring comet with hopes that other comets will brighten in summer and fall. </p> <p><strong>The Moon</strong><br>The Moon this year will experience two lunar eclipses, a few Supermoons / Micromoons, and a Blue Moon (that probably won’t look blue). Use these events to take a fresh look at Earth’s nearest neighbor in space!</p> <div class="wp-block-group TVOSidebar is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image aligncenter is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="949" height="603" src="https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar-e1711544146464.jpg" alt="" class="wp-image-72943" style="width:600px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar-e1711544146464.jpg 949w, https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar-e1711544146464-630x400.jpg 630w, https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar-e1711544146464-150x95.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/2021-Nov-Partial-Lunar-e1711544146464-768x488.jpg 768w" sizes="auto, (max-width: 949px) 100vw, 949px" /></a><figcaption class="wp-element-caption"><a href="https://www.instagram.com/p/CWdlaMPLXDnypKLmSmzR-DmxsFzQ0VPzV0avyQ0/" target="_blank" rel="noopener">Best of November 19, 2021 Lunar Eclipse</a> by Instagram user <a href="https://www.instagram.com/willstan267/" target="_blank" rel="noopener">Stanley Williams</a>. All rights reserved. Used by permission. <br><br>This is a <strong>partial eclipse</strong> image. The Earth’s <strong>umbra </strong>(deep shadow) covers most of the Moon. The blown out white <span style="text-decoration: underline;">and</span> gray zones are deep in the <strong>penumbra </strong>(outer shadow). The penumbra is large enough that it is possible for the Moon to solely transit within it. This makes the penumbral shadow hard to see and appreciate.<br><br>Imaged with Tele Vue-85 APO through Tele Vue Ethos 13mm eyepiece using the Tele Vue FoneMate smartphone adapter carrying iPhone 12 Pro all mounted on Tele Vue Gibraltar HD-4. The 2x zoom was used on the iPhone and the shutter was triggered via Apple Watch camera app.</figcaption></figure> </div> <p><span style="text-decoration: underline;">Lunar Eclipses</span><br>Let’s first review the types of <em>Lunar </em>Eclipses:</p> <ul class="wp-block-list"> <li><em>Total </em>Lunar Eclipses happen when the Moon passes through the umbral (inner) shadow of the Earth. This is the deepest shadow and can cause the Moon to turn red.</li> <li><em>Penumbral </em>Lunar Eclipses happen when the Moon only passes through the large penumbral (outer) shadow of the Earth. This shadow is mixed with sunlight and only dims the Moon slightly.</li> <li><em>Partial </em>Lunar Eclipses and phases happen when the Moon is not entirely inside the umbral shadow.</li> </ul> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/LE2024-03-25N1.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="601" height="640" src="https://televue.com/televueopticstalk/wp-content/uploads/LE2024-03-25N1.gif" alt="" class="wp-image-81195" style="width:325px"/></a></figure> <p>Because the Earth’s penumbral and umbral shadows are large at the distance of the Moon, the alignment of the Sun, Earth, and Moon two weeks before or after a solar eclipse is often close enough to cause a lunar eclipse. So, this year’s two lunar eclipses each happen two weeks before a solar eclipses. Unfortunately, these lunar eclipses won’t be spectacular. </p> <p><em>Lunar Eclipse maps and data courtesy of Fred Espenak and Jean Meeus, “Five Millennium Canon of Lunar Eclipses: -1999 to +3000”. The top graphic shows the path of the Moon (circles) as it moves through the Earth’s penumbral (grey) and umbral (red) shadows. On the outline map of the Earth’s continents, the dark shaded areas do not see the eclipse, the lighter shaded areas will see part of the event, and white areas see the whole event. The black dot shows where the Moon is highest in the sky at Greatest eclipse. “TD” differs from “UT” by slightly over a minute. See <a href="https://eclipse.gsfc.nasa.gov/LEcat5/figure.html" target="_blank" rel="noreferrer noopener">Explanation Of Lunar Eclipse Figures</a> page on NASA website for more information.</em></p> <figure class="wp-block-image alignleft is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/LE2024-09-18P1.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="601" height="640" src="https://televue.com/televueopticstalk/wp-content/uploads/LE2024-09-18P1.gif" alt="" class="wp-image-81196" style="width:325px"/></a></figure> <p><strong>The Penumbral lunar eclipse of March 25th </strong>saw the Moon immerse itself in Earth’s penumbral shadow. This produced a dimming of the lunar surface that most people did not notice. The best visibility was in the Western hemisphere.</p> <p><strong>September 18th is technically a partial lunar eclipse </strong>because the extreme limb of the Moon will dip into Earth’s umbral shadow. However, most of the event will find the Moon wallowing in the less spectacular penumbral shadow. Best visibility is in the eastern half of North America, all of Central and South America, as well as Western Europe and Africa.</p> <p></p> <p class="nogap "><span style="text-decoration: underline;">Supermoons, Micromoons, & Blue Moons</span></p> <figure class="wp-block-image alignright size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SuperMicroMoonSimulated.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="657" height="652" src="https://televue.com/televueopticstalk/wp-content/uploads/SuperMicroMoonSimulated.jpg" alt="" class="wp-image-492" style="width:350px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SuperMicroMoonSimulated.jpg 657w, https://televue.com/televueopticstalk/wp-content/uploads/SuperMicroMoonSimulated-150x150.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SuperMicroMoonSimulated-403x400.jpg 403w" sizes="auto, (max-width: 657px) 100vw, 657px" /></a><figcaption class="wp-element-caption">Simulated Micro and Super Moons. (Full Moons furthest and nearest the earth). Super Moon is 14% greater in diameter than Micro. Simulated image created from Paul Cyr’s NP101is image of November 2016 Super Moon. </figcaption></figure> <p>Due to the elliptical shape of the lunar orbit, the distance from the Earth to the Moon can vary by 50,200 km (31,200 mi). The term <em>Supermoon </em>describes a full Moon that occurs near the Moon’s closest approach to Earth (perigee) while <em>Micromoon </em>describes a full Moon near the point furthest from the Earth (apogee). A Supermoon can be 14% bigger than a Micromoon. The difference in size is very obvious in photographic comparisons.</p> <p>There is no agreed-upon definition of how close and far a Moon needs to be to qualify for any of these designations, so sources may differ on the number of these Moons in a year. From our reckoning, these are the dates of the remaining <strong>Supermoons </strong>of the year with the date of perigee in parenthesis: <strong>September 17/18</strong> (September 18), <strong>October 17</strong> (October 16), <strong>November 15</strong> (November 14), and <strong>December 15</strong> (December 12). Remaining <strong>Micromoons </strong>for the year will happen on <strong>March 25</strong> (March 23), <strong>April 23</strong> (April 19/20), and <strong>May 23</strong> (May 17).</p> <p>The <strong>August 19 full Moon counts as a seasonal <em>Blue Moon</em></strong>: the third of four full moons in a season. Blue moons occur on average once every 2.7 years Don’t expect the Moon to actually appear blue — unless you see it through a haze layer caused by a volcanic eruption.</p> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Astronomical Event Imaging with FoneMate for Smartphone Imaging</strong></p> <figure class="wp-block-image alignleft size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1053" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1053x800.jpg" alt="" class="wp-image-5733" style="width:131px;height:99px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1053x800.jpg 1053w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-150x114.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-527x400.jpg 527w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-768x583.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-500x380.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17-1200x911.jpg 1200w, https://televue.com/televueopticstalk/wp-content/uploads/SFA-0001_FoneMate_Horiz_wSamsungGalaxyNote4_on_Delos17.jpg 1422w" sizes="auto, (max-width: 1053px) 100vw, 1053px" /></a><figcaption class="wp-element-caption"><em>Use </em><a rel="noreferrer noopener" href="http://bit.ly/TVOFMImgFull" target="_blank">FoneMate</a><em><img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> to record events through your telescope.</em></figcaption></figure> <p>FoneMate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> can help to get steadier shots at the eyepiece with your smartphone camera. Unlike other phone mounts, FoneMate was designed to mount solidly to Tele Vue eyepieces via its Tele Vue compatible lock-ring connection. Use our<a rel="noreferrer noopener" href="http://bit.ly/TVOFMFull" target="_blank"> FoneMate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /></a> smartphone adapter (<a rel="noreferrer noopener" href="http://bit.ly/TVOFMMobile" target="_blank">mobile site</a>) on a compatible Tele Vue eyepiece to share lunar, solar, and eclipse views with friends or to do on-the-go imaging. </p> <p>While your camera app displays the image on the screen, hit the shutter or video button to capture the moment. Use voice commands to avoid movement on night imaging. (If you’ve set up your iOS/Android phone to take voice commands, just say “Hey Siri/Ok Google, take a photo”.) Using a time-lapse photo app will allow you to capture longer events like eclipses/transits (use telescope filters for solar work). </p> </div> <p><strong>The Sun</strong><br>We are now in <strong>Solar Cycle 25, </strong>which was originally predicted to peak in July 2025. Most recent estimates say the peak will happen this year and have a higher sunspot count than the first prediction. In fact, we may be at Solar Maximum right now! We only know about the peak after the fact when solar activity dies down. See our <a href="https://televue.com/televueopticstalk/2022/03/22/solar-update-march-2022/" target="_blank" rel="noreferrer noopener">Solar Update</a> blog from March 2022 for more on the Solar Cycle and what solar features are visible through properly filtered solar telescopes.</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="634" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18-634x800.jpg" alt="" class="wp-image-81221" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18-634x800.jpg 634w, https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18-317x400.jpg 317w, https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18-119x150.jpg 119w, https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18-768x970.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Sun_Southwestern-Surface-and-Limb-of-the-Sun-on-2024march18.jpg 1200w" sizes="auto, (max-width: 634px) 100vw, 634px" /></a><figcaption class="wp-element-caption"><a href="http://www.mcaligiuri.com/Sun_031824sw.html" target="_blank" rel="noopener">Southwestern Surface and Limb of the Sun on 3/18/24</a> by <a href="http://www.mcaligiuri.com/" target="_blank" rel="noopener">Michael Caligiuri</a>. All rights reserved. Used by permission. This Hydrogen-alpha light image displays prominences, sunspots and filaments along the Sun’s southwestern surface and limb. Sunspots are associated with Active Regions 3607 and 3613. Imaged with Lunt 100mm Double Stack using B1800 blocking filter with a Tele Vue 2.5x Powermate and FLIR Grasshopper 23S6M (Sony IMX174) monochrome video camera all carried on Losmandy GM-11 mount from Carlsbad, CA. Exposures were 161 fps for surface and 23 fps for prominence channels. Registered and combined 15% of the best 3000 frames from each channel and cropped.</figcaption></figure> <p><span style="text-decoration: underline;">Solar Eclipses</span><br>This is the third year in a row that a solar eclipse in April is followed by another one six months later in October. That three year cycle won’t repeat again until the year 2041. Let’s first review the types of <em>Solar </em>Eclipses: </p> <ul class="wp-block-list"> <li>A <em>Total </em>eclipse happens when the Moon completely obscures the Sun for an observer. </li> <li>An <em>Annular </em>eclipse (from the word <em>annulus </em>or ring) happens when the Moon appears inside the disk of the Sun, but is too small to cover the Sun completely. This allows a ring of light from the Sun to shine around the lunar disk. </li> <li><em>Hybrid </em>events happen when the eclipse appears <em>Annular </em>in some parts of the eclipse path and <em>Total </em>in another part. </li> <li><em>Partial </em>eclipses and phases happen when the Moon obscures a part of the Sun while the lunar disk does not completely overlap the Solar disk. </li> </ul> <p>Except for the moments of totality on the centerline of a total eclipse, viewers are cautioned to keep eclipse glasses on for these events.</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1040" height="713" src="https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse.jpg" alt="" class="wp-image-1963" style="width:800px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse.jpg 1040w, https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse-150x103.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse-583x400.jpg 583w, https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse-768x527.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/JStephensTV140Eclipse-500x343.jpg 500w" sizes="auto, (max-width: 1040px) 100vw, 1040px" /></a><figcaption class="wp-element-caption">Jim Stephens of Seattle, WA was in Madras, OR for the 2017 Great American Eclipse (Total) and photographed it with his Tele Vue TV-140 (700mm, f/5.0) using a Canon EOS 40D set to ISO 100. Shutter speed varied between photographs as the eclipse progressed. Top-right shows the Baily’s beads effect as the light of the Sun shines through mountain valleys on the Moon. Bottom right is the Diamond ring effect when a sliver of the solar disk is shining at the edge of the lunar limb.</figcaption></figure> <figure class="wp-block-image alignleft is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/2024-04-081.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="520" height="600" src="https://televue.com/televueopticstalk/wp-content/uploads/2024-04-081.gif" alt="" class="wp-image-81201" style="width:350px"/></a></figure> <p><em>Solar Eclipse maps and data courtesy of Fred Espenak and Jean Meeus, “Five Millennium Canon of Solar Eclipses: -1999 to +3000” (NASA/TP-2008-214170). Green lines denote limits of partial visibility. Blue line is the path of Totality. See <a rel="noreferrer noopener" href="https://eclipse.gsfc.nasa.gov/SEcat5/SEmapkey.html" target="_blank">Key to Solar Eclipse Figures</a> for more information.</em></p> <p>I’m sure many of our readers have researched the the <strong>Total Solar Eclipse of April 8 </strong>and have knowledge of the circumstances of the event (i.e., maximum duration will be 4′ 28″). But, how many of you knew the Moon will be at perigee the day before? Therefore, the event will feature a larger than average <em>Super-New-Moon</em> passing in front of the Sun. The eclipse will start in the warm waters of the South Pacific and head north to the Pacific beaches of Mexico. It will cross the border into Texas, where the shadow of totality will engulf or just skirt all major cities in the state save for Houston. It then passes though the Southern U.S. before entering the mid-West with the shadow of totality passing over Indianapolis and then over or close to every major city in Ohio before heading toward the Eastern Great Lakes region. Totality occurs over most of Lakes Erie and Ontario, along the highly populated U.S./Canada border, with the major metropolitan areas of Hamilton, Buffalo, Rochester, Syracuse and Montreal experiencing totality. The eclipse finishes its continental journey over southern Quebec, Northern Maine, then onto New Brunswick and Newfoundland, before ending in the cold waters of the North Atlantic. For many viewers, experiencing twilight at noon and sighting the Sun’s beautiful outer atmosphere, known as the corona, will be a once-in-a-lifetime event. </p> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/2024-10-021-1.gif" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="520" height="600" src="https://televue.com/televueopticstalk/wp-content/uploads/2024-10-021-1.gif" alt="" class="wp-image-81202" style="width:350px"/></a></figure> <p>Six months later, on <strong>October 2, an Annular Solar Eclipse </strong>will create “ring of fire” around the darkened New Moon. Starting in the Northern Pacific Ocean, the path of totality will cross the equator and head south and cross the tip of South America into southern Chile and Argentina before ending off the coast in the chilly South Atlantic waters. While no solar corona will be visible, the duration will be a long 7′ 25″.</p> <p>The Americas will have a bit of a wait before the next series of eclipses graces the skies. <strong>The next Total Eclipse over the Americas</strong> will take place in an arc encompassing Montana, Alberta, the Northwest Territories, and into Greenland in <strong>2044</strong>. Just a year later, in <strong>2045</strong>, a Total Eclipse will sweep over Pacific waters onto Northern California, and transit the U.S. before dipping into Gulf and Caribbean waters off the coast of Florida and heading into Guyana and northern Brazil. Please note these events down on your calendar so you don’t forget!</p> <figure class="wp-block-image alignright size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="350" height="446" src="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg" alt="" class="wp-image-817" style="width:130px;height:166px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb.jpg 350w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb-118x150.jpg 118w, https://televue.com/televueopticstalk/wp-content/uploads/Powermate_thumb-314x400.jpg 314w" sizes="auto, (max-width: 350px) 100vw, 350px" /></a><figcaption class="wp-element-caption">Powermates come in 1¼” (2.5x & 5x) and 2″ (2x, & 4x) format.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-constrained wp-block-group-is-layout-constrained"> <p><strong><strong>Powermates for Solar Imaging</strong></strong><br>Shots and animations of solar proms and detachments made by sticking a camera at the end of your longest focal length scope will likely produce tiny images. It’ll need a “boost” to achieve the solar images seen in this post. Tele Vue <a href="http://bit.ly/TVOPMBakFull" target="_blank" rel="noopener">Powermate</a><img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> photo / visual amplifiers (<a href="http://bit.ly/TVOPMBakMobile" target="_blank" rel="noopener">mobile site</a>) increase the focal length of your scope with reduced aberrations, greater magnification potential, and compact size compared to typical Barlow lenses. They each also have a T-ring accessory adapter available for direct thread-on attachment of DSLR and M42 threaded astrocameras and accessories. </p> <p class="clearBoth"></p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="640" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19-640x800.jpg" alt="" class="wp-image-81224" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19-640x800.jpg 640w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19-320x400.jpg 320w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19-120x150.jpg 120w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19-768x960.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_solarLimb__2024March19.jpg 1080w" sizes="auto, (max-width: 640px) 100vw, 640px" /></a></figure> <figure class="wp-block-image alignright is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="728" height="957" src="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb.jpg" alt="" class="wp-image-81248" style="width:250px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb.jpg 728w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb-304x400.jpg 304w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb-609x800.jpg 609w, https://televue.com/televueopticstalk/wp-content/uploads/JamesChips_PowermateADC_forweb-114x150.jpg 114w" sizes="auto, (max-width: 728px) 100vw, 728px" /></a></figure> <p><a href="https://www.instagram.com/p/C45jEawupwv/" target="_blank" rel="noopener">Prominences 19 March 2024</a> by Instagram user <a href="https://www.instagram.com/james.and.chips/" target="_blank" rel="noopener">James Sinclair</a>. All rights reserved. Used by permission. </p> <p>“It seems like the two bottom prominences are chatting and the big prominence on top is crawling down to eat them, ” says James. <br><br>Imaged with Lunt 130mm Double Stack using B3400 blocking filter and Atmospheric Dispersion Corrector (ADC) followed by Tele Vue Powermate and Player One Apollo-M Max mono camera all mounted on Skywatcher EQ6 R Pro. Imaged from Southern Utah. Exposure was 1,000 Frames at 109 fps. <br><br>“The beauty of using the ADC with solar is that it eliminates Newton Rings and gives a more even dispersion of light. Using a tilt adapter to eliminate Newton rings prevents an even focus across the sensor frame. So an ADC is a must for solar imaging in my opinion.”</p> </div> <p><strong>The Planets</strong><br><span style="text-decoration: underline;">Oppositions</span><br>Planets in <em>opposition </em>are in the sky opposite the Sun when viewed from Earth. They rise at sunset and are in the sky all night. Around opposition, the planets are closest to Earth and at their brightest. This makes opposition an opportune time to view and image a planet — especially the faint “ice giants” Uranus and Neptune. Note that only planets with orbits further away from the Sun than Earth’s orbit can be in opposition. </p> <figure class="wp-block-image aligncenter"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1024" height="458" src="https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30.jpg" alt="" class="wp-image-81258" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30.jpg 1024w, https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30-700x313.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30-150x67.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Thomas-Williamson-Mars-Jupiter-Saturn-2020-June-30-768x344.jpg 768w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></a><figcaption class="wp-element-caption"><a href="https://www.flickr.com/photos/abqtom/49968812502/" target="_blank" rel="noopener">Mars, Jupiter, and Saturn June-03-2020</a> by flickr user <a href="https://www.flickr.com/photos/abqtom/" target="_blank" rel="noopener">Thomas Williamson</a>. All rights reserved. Used by permission. “Good seeing at last!” Imaged with 12.5″ Newtonian through ZWO Atmospheric Dispersion Corrector and Tele Vue 2x Barlow (effective f/19) using a ZWO ASI290MC color camera. </figcaption></figure> <figure class="wp-block-image alignright size-full clearRight"><a href="https://televue.com/televueopticstalk/wp-content/uploads/JPLNASA.Opposition.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="300" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/JPLNASA.Opposition.jpg" alt="" class="wp-image-2083" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JPLNASA.Opposition.jpg 300w, https://televue.com/televueopticstalk/wp-content/uploads/JPLNASA.Opposition-150x150.jpg 150w" sizes="auto, (max-width: 300px) 100vw, 300px" /></a><figcaption class="wp-element-caption">Opposition: Earth and outer planet line up on same side as Sun (bottom of diagram). Solar Conjunction: Earth and outer planet line up on opposite sides of Sun (top of diagram). Courtesy NASA/JPL-Caltech.</figcaption></figure> <p>Mars won’t be in opposition until 2025 as we’re slowly chasing it around the Sun after sailing by it in 2022. But the slower-moving, major, outer planets will all have oppositions this year.</p> <ul class="wp-block-list"> <li>Saturn: <strong>September 8</strong></li> <li>Neptune: <strong>September 20/21</strong></li> <li>Uranus: <strong>November 17</strong></li> <li>Jupiter: <strong>December 7</strong></li> </ul> <p><span style="text-decoration: underline;">Planetary Conjunctions and Occultations</span><br>Sometimes planets get close enough to each other to fit together in one eyepiece field or the Moon and a planet cozy up to each other. These are planetary conjunctions. There are also solar conjunctions (diagram above), but that just means that a body is near the Sun and impossible to see. Occultations happen when one body appears to go behind the other. The most easily visible of these events is when the Moon passes in front of a star or planet. </p> <p>For the remainder of the year, here are some planetary conjunctions far enough from the Sun to be easily visible well above horizon obstructions for mid-northern latitude observers. Events listed are for objects within ½° (30′) of each other with at least one member of the pair easily visible naked eye, in binoculars, and low power telescope eyepieces. Objects will still be close in the days before and after the date given. In some parts of the world, the these conjunctions will be closer or even become lunar <a href="http://www.lunar-occultations.com/iota/planets/planets.htm" data-type="link" data-id="http://www.lunar-occultations.com/iota/planets/planets.htm" target="_blank" rel="noreferrer noopener">occultations </a>where the object slides behind the Moon. </p> <ul class="wp-block-list"> <li><strong>May 31</strong> morning: Conjunction of <strong>Moon and Saturn</strong> with the Moon 22′ south of Saturn. For mid-northern latitudes the pair will rise by 2 A.M..</li> <li><strong>June 27 </strong>morning: Conjunction of <strong>Moon and Saturn</strong> with the Moon 4’38” north of Saturn. For mid-northern latitudes the pair will rise before midnight and be high in the sky by dawn.</li> <li><strong>July 15 </strong>morning: Conjunction of <strong>Mars and Uranus</strong> with Mars 33′ (a little over a full-Moon width) south of the Ice Giant planet. The pair will rise a few hours before sunrise.</li> <li><strong>July 24</strong> morning: Conjunction of <strong>Moon and Saturn</strong> with the Moon 23′ north of Saturn. They will rise before 1 A.M. and be high in the sky by dawn.</li> <li><strong>August 14</strong> morning: Conjunction of<strong> Jupiter and Mars</strong> with Jupiter passing 18′ to the south of Mars. The pair will rise at 1 A.M. at mid-northern latitudes and be visible high in the pre-dawn sky.</li> <li><strong>August 20</strong>: Conjunction of <strong>Moon and Saturn</strong> with the Moon 27′ north of Saturn. They will rise the previous night before 10 P.M and be highest in the sky after 2 A.M.</li> <li><strong>September 17</strong>: Conjunction of <strong>Moon and Saturn</strong> with the Moon 18′ north of Saturn. They will rise the previous night before 8 P.M and be highest in the sky after midnight.</li> <li><strong>October 14 </strong>evening: Conjunction of <strong>Moon and Saturn</strong> with the Moon 6’45” north of Saturn. They will be visible at sundown and set around 3 A.M. the next day.</li> <li><strong>November 10</strong> evening: Conjunction of <strong>Moon and Saturn</strong> with the Moon 5’18” north of Saturn. They will be visible at sundown and set around midnight.</li> <li><strong>December 8</strong> evening: Conjunction of <strong>Moon and Saturn</strong> with the Moon 18′ north of Saturn. They will be visible at sundown near their highest point in the sky and will set after 10 P.M.</li> </ul> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1080" height="701" src="https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn.jpg" alt="" class="wp-image-7759" srcset="https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn-616x400.jpg 616w, https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn-150x97.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/shadalfJupiterSaturn-768x498.jpg 768w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></a><figcaption class="wp-element-caption"><a href="https://www.instagram.com/p/CJEBsdvJHRt/" target="_blank" rel="noopener">Jupiter and Saturn in conjunction on 12/20/2020. </a> by Instagram user <a href="https://www.instagram.com/shadalf/" target="_blank" rel="noopener">Rodrigo Carvajal</a>. All rights reserved. Used by permission. The planets were 7.5-minutes-of-arc apart. Imaging was done with 11-inch f/5 Newtonian Reflector using Tele Vue Paracorr type 2 corrector with a QHY5III 178C Camera. Two 60-second videos combined to correctly expose both planets. From Santiago, Chile. From there, the planets were 23.5-deg above the horizon at sunset.</figcaption></figure> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="391" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-391x800.jpg" alt="" class="wp-image-1093" style="width:164px;height:293px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-391x800.jpg 391w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-73x150.jpg 73w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-196x400.jpg 196w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy-500x1022.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2-copy.jpg 661w" sizes="auto, (max-width: 391px) 100vw, 391px" /></a><figcaption class="wp-element-caption">Nagler 3-6 Planetary Zoom.</figcaption></figure> <p><strong><strong>The Most Versatile Planetary Eyepiece!</strong></strong></p> <p>The Nagler Zoom was conceived as our ideal planetary eyepiece. Like all Tele Vue eyepieces, it’s designed for full-field sharpness in any speed telescope, as well as high contrast and transmission with natural color rendition, low scatter, and comfortable eye relief. Use it to fine-tune magnification for the seeing conditions — no need to swap eyepieces to find the highest usable power. It’s parfocal through the zoom range, maintains its eye relief, and has click-stops at each marked focal length. Its constant 50° apparent field of view makes it more appropriate for scopes on tracking mounts. It is excellent for turning up the power to confirm that you’ve sighted an ice-giant planet like Uranus or Neptune and not a field star. Read more about it on our website <a href="http://bit.ly/TVON3-6ZFull" target="_blank" rel="noreferrer noopener">Nagler 3-6</a>-mm and (<a href="http://bit.ly/TVON3-6Mobile" target="_blank" rel="noreferrer noopener">mobile site</a>).</p> </div> <p><strong>Comets of Interest</strong><br>Comet 12P/Pons–Brooks in the evening sky is an easy object for northern hemisphere observers. In the last days of March and beginning of April it will be passing by 2nd magnitude Hamal (alpha Ari) the brightest star in Aries. It will be lost in the solar glare in mid-April and reach perihelion on April 21, 2024 when it will be a southern hemisphere object. It is barely naked-eye in dark skies but is known to have outbursts of brightening. It should show easily in a telescope or large binocular.</p> <figure class="wp-block-image aligncenter size-large"><a href="https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="533" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-533x800.jpg" alt="" class="wp-image-81263" srcset="https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-533x800.jpg 533w, https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-266x400.jpg 266w, https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-100x150.jpg 100w, https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-768x1153.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02-1023x1536.jpg 1023w, https://televue.com/televueopticstalk/wp-content/uploads/AlexanderSurkov_Comet-12PPons-Brooks_2024March02.jpg 1364w" sizes="auto, (max-width: 533px) 100vw, 533px" /></a><figcaption class="wp-element-caption"><a href="https://www.flickr.com/photos/152409317@N06/53590113353/" target="_blank" rel="noopener">Comet 12P/Pons-Brooks</a> by flickr user <a href="https://www.flickr.com/photos/152409317@N06/" target="_blank" rel="noopener">Alexander Surkov</a>. All rights reserved. Used by permission. Imaged with Tele Vue TV-NP101is and ZWO ASI2600MC Pro color camera riding on ZWO AM5 mount. Exposures were 28 × 90″ for a total of 42′ on March 2, 2024 from Mitschurinsk, Tambovskaya Oblast, Russia.</figcaption></figure> <p>In the autumn, comet C/2023 A3 Tsuchinshan–ATLAS, will swing through perihelion on 27 September 2024. Best viewing is around then and before sunrise when it is predicted to be easily naked eye. It will then become an evening object in October skies. </p> <div class="wp-block-group TVOSidebar is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Tele Vue Refractors</strong><br><a href="http://bit.ly/TVOSCOPESPECS" target="_blank" rel="noreferrer noopener">Every Tele Vue refractor</a>, from the Tele Vue-60 to the 5″ Tele Vue-NP127is, can give at least a 4° field with our low-power eyepieces and also render high contrast, diffraction limited images. They are perfect for observing all of the events in this blog from comets to conjunctions! </p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="974" height="456" src="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2.jpg" alt="" class="wp-image-78572" style="width:700px;height:328px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2.jpg 974w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2-700x328.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2-150x70.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Telescopes_scaled_tv3b1-2-768x360.jpg 768w" sizes="auto, (max-width: 974px) 100vw, 974px" /></a></figure> <p>From the powder-coated tubes and anodized aluminum finishes to the silky-smooth, lash-free focusing, these scopes are rugged and easily transported to dark-sky locations. Tele Vue telescopes are engineered and built to be your life-long observing companions; and someday, your kids’ as well. All Tele Vue telescopes come with a <a href="http://bit.ly/TVOYTVSCOPE" target="_blank" rel="noreferrer noopener">5-year Limited Warranty</a> and are built and serviced in our Chester, NY location.</p> </div> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <div style="height:21px" aria-hidden="true" class="wp-block-spacer"></div> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <div style="height:24px" aria-hidden="true" class="wp-block-spacer"></div> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>2024 Tele Vue Product Anniversaries</title> <link>https://televue.com/televueopticstalk/2024/02/28/2024-tele-vue-product-anniversaries/</link> <comments>https://televue.com/televueopticstalk/2024/02/28/2024-tele-vue-product-anniversaries/#comments</comments> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Wed, 28 Feb 2024 15:08:30 +0000</pubDate> <category><![CDATA[History]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[history]]></category> <category><![CDATA[Tele Vue]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=80933</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/02/28/2024-tele-vue-product-anniversaries/" title="2024 Tele Vue Product Anniversaries" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>Our old catch-phrase “Tops in the Field” speaks to the quality of our gear in the observing field. We celebrate]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/02/28/2024-tele-vue-product-anniversaries/" title="2024 Tele Vue Product Anniversaries" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/FeaturedImage_2024Anniv.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p><em>Our old catch-phrase “Tops in the Field” speaks to the quality of our gear in the observing field. We celebrate the anniversaries years of our top-rated products by contrasting them with standouts in the world of track and field in those years. </em></p> <p><strong>1989: 35 Years Ago — Emerald Anniversary</strong></p> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow" style="flex-basis:100%"> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-7 column1-desktop-grid__row-1 column2-desktop-grid__span-5 column2-desktop-grid__start-8 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVOBLMobile" data-type="link" data-id="http://bit.ly/TVOBLMobile" target="_blank" rel="noreferrer noopener">2x BIG Barlow BWC-2211</a></span></p> <figure data-wp-context="{"imageId":"6740076a888ba"}" data-wp-interactive="core/image" class="wp-block-image alignleft size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="502" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-502x800.jpg" alt="" class="wp-image-81135" style="width:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-502x800.jpg 502w, https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-251x400.jpg 251w, https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-94x150.jpg 94w, https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-768x1224.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy-964x1536.jpg 964w, https://televue.com/televueopticstalk/wp-content/uploads/BWC_2211_BigBarlow_2x_v1-copy.jpg 1255w" sizes="auto, (max-width: 502px) 100vw, 502px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">Tele Vue 2x BIG Barlow</figcaption></figure> <p>Prior to the Big Barlow introduction, Tele Vue Barlows were strictly for 1¼-inch eyepieces. The thought was Barlows were only needed to get to magnifications beyond what that the shortest focal length eyepieces provided…and all those were 1¼-inch eyepieces. It was a Tele Vue dealer that originally persuaded us to design a 2-inch Barlow, virtually guaranteeing us that it would be a hit. And, he was right! The introduction of our 2x BIG Barlow allowed doubling the power of wide-field, 2-inch eyepieces while maintaining the native eye-relief of the long focal length eyepiece. When the Big Barlow is fully seated, 2-inch and 1¼-inch eyepieces will be parfocal. For this reason, we recommend the Big Barlow mainly for Dob/Newtonian scopes and not for any telescope using a Star Diagonal. The current model has brass clamp rings, filter threads, and is fully multicoated. Now celebrating its Emerald Anniversary, it has stood the test of time.</p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <div class="wp-block-group TVOSidebar TVOSidebarBlue is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image alignright size-full is-resized"><img loading="lazy" decoding="async" width="640" height="640" src="https://televue.com/televueopticstalk/wp-content/uploads/640px-High_jump_pictogram.svg1_.png" alt="" class="wp-image-81108" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/640px-High_jump_pictogram.svg1_.png 640w, https://televue.com/televueopticstalk/wp-content/uploads/640px-High_jump_pictogram.svg1_-400x400.png 400w, https://televue.com/televueopticstalk/wp-content/uploads/640px-High_jump_pictogram.svg1_-150x150.png 150w" sizes="auto, (max-width: 640px) 100vw, 640px" /></figure> <p><strong>Also in 1989 …</strong><br>Javier Sotomayor (Cuba) Set a world record of 2.43-meters in the high jump event at the 2nd IAAF World Indoor Championships in Athletics on 4 Mar 1989 in Budapest, Hungary.</p> </div> <div style="height:51px" aria-hidden="true" class="wp-block-spacer"></div> <blockquote class="wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow"> <p class="TVOSidebar has-small-font-size">Tele Vue’s Big Barlow doubled the power but, like an optically perfect window, never gave any other indication that it was in the light path. The airy disc and surrounding diffraction rings were perfect, with no sign of astigmatism or coma. It will provide outstanding optical performance with all your eyepieces.</p> <cite>Alan Dyer. <em>Astronomy Magazine</em></cite></blockquote> </div> </div> </div> </div> <div style="height:31px" aria-hidden="true" class="wp-block-spacer"></div> <p><strong>1994: 30 Years Ago <strong>— </strong>Pearl Anniversary</strong></p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-4 column1-desktop-grid__row-1 column2-desktop-grid__span-3 column2-desktop-grid__start-5 column2-desktop-grid__row-1 column3-desktop-grid__span-5 column3-desktop-grid__start-8 column3-desktop-grid__row-1 column1-tablet-grid__span-3 column1-tablet-grid__row-1 column2-tablet-grid__span-2 column2-tablet-grid__start-4 column2-tablet-grid__row-1 column3-tablet-grid__span-3 column3-tablet-grid__start-6 column3-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 column3-mobile-grid__span-4 column3-mobile-grid__row-3 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__none"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVOPANOPTICMobile" target="_blank" rel="noreferrer noopener">Panoptic 27mm</a></span><br>The 68° Panoptic 27mm eyepiece is still a “Pearl” after 30-years. Introduced as an “in-between” focal length, its scaled design offers equal performance to the 35mm and 22mm Panoptics it sat between at its introduction. Like all Tele Vue eyepieces, the 27mm Panoptic features full multi-coatings, blackened lens edges, filter threads, and rubber grip rings.</p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure data-wp-context="{"imageId":"6740076a89d0c"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="440" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-440x800.jpg" alt="" class="wp-image-80994" style="width:auto;height:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-440x800.jpg 440w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-220x400.jpg 220w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-83x150.jpg 83w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-768x1395.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy-845x1536.jpg 845w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_270_Panoptic_27_V2-copy.jpg 884w" sizes="auto, (max-width: 440px) 100vw, 440px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">Panoptic 27mm</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <div class="wp-block-group TVOSidebar TVOSidebarBlue is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image alignright is-resized"><img loading="lazy" decoding="async" width="200" height="200" src="https://televue.com/televueopticstalk/wp-content/uploads/1316595-2001.png" alt="" class="wp-image-81109" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/1316595-2001.png 200w, https://televue.com/televueopticstalk/wp-content/uploads/1316595-2001-150x150.png 150w" sizes="auto, (max-width: 200px) 100vw, 200px" /></figure> <p><strong>Also in 1994 …</strong><br>Bernardo Segura (Mexico) sets a world record of 1h 17m 25.6s in the 20,000-meter walk in Bergen Norway.</p> </div> </div> </div> <p></p> <p><strong>1999: 25 Years Ago <strong>— </strong>Silver Anniversary</strong><br>1999 was a tech “gloom year” as society awaited the “Y2K Bug” to send computers crashing at the first tick of the new century. But, for Tele Vue, 1999 had a “silver lining” as all four products introduced that year are still in production today!</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-4 column1-desktop-grid__row-1 column2-desktop-grid__span-4 column2-desktop-grid__start-5 column2-desktop-grid__row-1 column3-desktop-grid__span-4 column3-desktop-grid__start-9 column3-desktop-grid__row-1 column1-tablet-grid__span-2 column1-tablet-grid__row-1 column2-tablet-grid__span-3 column2-tablet-grid__start-3 column2-tablet-grid__row-1 column3-tablet-grid__span-3 column3-tablet-grid__start-6 column3-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 column3-mobile-grid__span-4 column3-mobile-grid__row-3 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure data-wp-context="{"imageId":"6740076a8af7f"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="423" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-423x800.jpg" alt="" class="wp-image-80996" style="width:auto;height:300px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-423x800.jpg 423w, https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-211x400.jpg 211w, https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-79x150.jpg 79w, https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-768x1453.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy-812x1536.jpg 812w, https://televue.com/televueopticstalk/wp-content/uploads/PMT_4201_PowerMate_4x_V2a-copy.jpg 1057w" sizes="auto, (max-width: 423px) 100vw, 423px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">4x Powermate</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure data-wp-context="{"imageId":"6740076a8b839"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="456" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-456x800.png" alt="" class="wp-image-77360" style="width:171px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-456x800.png 456w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-228x400.png 228w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-86x150.png 86w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans.png 616w" sizes="auto, (max-width: 456px) 100vw, 456px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">Nagler 31mm Type-5</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure data-wp-context="{"imageId":"6740076a8c2ab"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-full is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="240" height="400" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/TRF_2008_0.8xFlat-1.jpg" alt="" class="wp-image-1165" style="width:auto;height:300px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TRF_2008_0.8xFlat-1.jpg 240w, https://televue.com/televueopticstalk/wp-content/uploads/TRF_2008_0.8xFlat-1-90x150.jpg 90w" sizes="auto, (max-width: 240px) 100vw, 240px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">0.8x Reducer/Flattener .</figcaption></figure> </div> </div> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-7 column1-desktop-grid__row-1 column2-desktop-grid__span-5 column2-desktop-grid__start-8 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVOPMBakMobile" data-type="link" data-id="http://bit.ly/TVOPMBakMobile" target="_blank" rel="noreferrer noopener">4x Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> PMT-4201</a></span><br>Our first 2-inch barrel Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> not only quadrupled the magnification, it did so without changing the exit pupil location of the eyepiece which results in vignetting of the field of view. The Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> consists of a negative doublet plus a positive “pupil-correcting” doublet. This 4-element system provides the magnifying function of a Barlow without its limitations by restoring the field rays back towards their original direction, as if the Powermate<img src="https://s.w.org/images/core/emoji/15.0.3/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" /> were not there. The result is a pure magnification increase. The current model can also use an optional T-Ring adapter for attaching to DSLR cameras or dedicated astronomy cameras that use M42 thread.</p> <p></p> <p></p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <div class="wp-block-group TVOSidebar TVOSidebarBlue is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image alignright is-resized"><img loading="lazy" decoding="async" width="300" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png" alt="" class="wp-image-81107" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png 300w, https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1-150x150.png 150w" sizes="auto, (max-width: 300px) 100vw, 300px" /></figure> <p><strong>Also in 1999 …</strong><br>Marion Jones (USA) set a world record, 5.93″ run, in the 50-meter sprint at the 7th IAAF World Championships on 22 August 1999 in Athletics in Seville, Spain.</p> </div> </div> </div> <p><span style="text-decoration: underline;"><a href="http://bit.ly/2EIHitq" data-type="link" data-id="http://bit.ly/2EIHitq" target="_blank" rel="noreferrer noopener">Nagler 31mm Type-5</a></span><br>Twenty-five years young, the Nagler 31mm Type-5 became an instant legend when it was “born” in 1999. Our longest focal length 82° Apparent Field Nagler eyepiece has 19mm of eye relief, wide grip ring, and a unique 6-element design using some pretty exotic glass types. It’s the “go-to” eyepiece for owners of Paracorr corrected Dobsonians as fast as f/4. Why? It provides almost the largest true field possible for a 2-inch eyepiece with an exit pupil size that minimizes visibility of the secondary shadow. Take an example of a 12.5-inch f/4.5 Newtonian, with a 55mm Plössl the combination produces a 1.8° field at 35x with a large, 9.1mm exit pupil. A pupil that large will likely introduce a visible secondary shadow in the middle of the field of view. The same scope with a 31mm Nagler will produce a 1.7° field at 46x with 6.9mm exit pupil — almost the same field, at higher power, and much preferred exit pupil size.</p> <blockquote class="wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow"> <p class="TVOSidebar has-small-font-size">The ultimate low-power eyepiece is the six-element 31mm Nagler Type 5.</p> <cite>T. Dickenson, A. Dyer. “Eyepieces/Nagler-Class Eyepieces”. The Backyard Astronomer’s Guide (3rd edition). p.74.</cite></blockquote> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <p><span style="text-decoration: underline;"><a href="https://bit.ly/TVOTRFMobile" target="_blank" rel="noreferrer noopener">0.8x Reducer/Flattener TRF-2008 </a></span><br>This must-have accessory for imaging through Tele Vue-85, -76, or Pronto telescopes does wonders flattening the field while increasing photographic speed. This fully multi-coated 3-element unit with 48mm filter thread inserts directly into 2-inch focusers and accepts standard T-Rings for 35mm cameras or M42 for astro-cameras. See Brian Paczkowski’s use of the TRF-2008 with Tele Vue-76 and QSI 683 CCD camera in our <a href="https://televue.com/televueopticstalk/2021/01/27/tele-vue-76-imaging-new-mexico-skies/" target="_blank" rel="noreferrer noopener">Tele Vue-76: Imaging New Mexico Skies! </a>blog.</p> <blockquote class="wp-block-quote TVOSidebar has-small-font-size is-layout-flow wp-block-quote-is-layout-flow"> <p class="has-small-font-size">[T]he 0.8x Reducer/Flattener performs superbly. Star images are perfectly round to the very corners of the field, and there is minimal vignetting. A high-magnification examination of the images reveals little, if any, secondary color even at the edge of the field.</p> <cite>Cook, C. “Test Report: Less Magnification for Photography”. <em>Sky & Telescope</em> (July 1999)</cite></blockquote> <div style="height:38px" aria-hidden="true" class="wp-block-spacer"></div> <figure class="wp-block-image aligncenter"><a href="https://televue.com/televueopticstalk/wp-content/uploads/DC_DragonsOfARA.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="700" height="550" src="https://televue.com/televueopticstalk/wp-content/uploads/DC_DragonsOfARA.jpg" alt="" class="wp-image-27838" srcset="https://televue.com/televueopticstalk/wp-content/uploads/DC_DragonsOfARA.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/DC_DragonsOfARA-509x400.jpg 509w, https://televue.com/televueopticstalk/wp-content/uploads/DC_DragonsOfARA-150x118.jpg 150w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a><figcaption class="wp-element-caption"><a href="https://www.astrobin.com/lburv3/F/" target="_blank" rel="noopener">The Fighting Dragons of Ara (Hubble Palette)</a> by AstroBin user <a href="https://www.astrobin.com/users/dcartes/" target="_blank" rel="noopener">Diego Cartes</a>. All rights reserved. Used by permission. Imaging was done with Tele Vue-76 APO refractor,<strong> Tele Vue TRF-2008 </strong>0.8x Reducer/Flattener (converts Tele Vue-76 to 380mm f/5), ZWO ASI 1600MM Cooled Pro monochrome camera, ZWO 7x36mm Filter Wheel (EFW), and guiding with ZWO ASI 290mm Mini ─ all riding on Celestron Advanced VX mount. Imaged with bin 1×1 through ZWO OIII -7nm 36mm: 59×900″ (14h 45′), ZWO SII -7nm 36mm: 78×900″ (19h 30′), & ZWO H-alpha 36mm: 69×600″ (11h 30′) for an amazing total integration time of 45h 45′.</figcaption></figure> <p></p> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVODiagPrismMobile" data-type="link" data-id="http://bit.ly/TVODiagPrismMobile" target="_blank" rel="noreferrer noopener">90º Everbrite Diagonals</a></span><br>For those that simply want the best match for their astronomical eyepieces, our dielectric Everbrite diagonals will give you the brightest and most natural image possible. The advantage of the dielectric coating over enhanced aluminum is it’s 99% reflective across the visual spectrum, providing the brightest, whitest image possible, avoiding the color aberration introduced by prisms. Though common now in the amateur market, twenty-five years ago the dielectric coating was pretty exotic stuff. Optical quality is ensured as every mirror is star-tested in a special fixture which places the mirror in a higher power-space than a diagonal mirror is ever used. The CNC machined, one piece, aluminum-body construction guarantees that the centerline of the nose and eyepiece barrels are exactly 90° and coincident to each other and that the flat for the mirror is machined exactly 45° to both. Besides such an accuracy advantage over typical diagonal construction, heavy accessories can’t force the diagonal body to “unscrew” from the barrel. All models feature brass clamp rings, anti-reflection threads, and 1¼-inch and 48mm filter threads respectively.</p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-3 column1-desktop-grid__row-1 column2-desktop-grid__span-5 column2-desktop-grid__start-4 column2-desktop-grid__row-1 column3-desktop-grid__span-4 column3-desktop-grid__start-9 column3-desktop-grid__row-1 column1-tablet-grid__span-2 column1-tablet-grid__row-1 column2-tablet-grid__span-3 column2-tablet-grid__start-3 column2-tablet-grid__row-1 column3-tablet-grid__span-3 column3-tablet-grid__start-6 column3-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 column3-mobile-grid__span-4 column3-mobile-grid__row-3 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__none"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1056" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-1056x800.jpg" alt="" class="wp-image-81002" style="width:auto;height:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-1056x800.jpg 1056w, https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-528x400.jpg 528w, https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-150x114.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-768x582.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy-1536x1164.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/DPC_1250_EB_1.25in_90deg-copy.jpg 2000w" sizes="auto, (max-width: 1056px) 100vw, 1056px" /></a><figcaption class="wp-element-caption">1¼” 90º Everbrite (DPC-1250)</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="900" height="454" src="https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1.jpg" alt="" class="wp-image-8043" style="width:auto;height:125px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1.jpg 900w, https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1-700x353.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1-150x76.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/DDP_8004_EB2in90d_2to1.25-1-768x387.jpg 768w" sizes="auto, (max-width: 900px) 100vw, 900px" /></a><figcaption class="wp-element-caption">2″ 90-deg Diagonal (DDP-8004)</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-bottom"> <figure class="wp-block-image aligncenter size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="960" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-960x800.jpg" alt="" class="wp-image-2436" style="width:auto;height:130px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-960x800.jpg 960w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-150x125.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-480x400.jpg 480w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-768x640.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-500x417.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong-1200x1000.jpg 1200w, https://televue.com/televueopticstalk/wp-content/uploads/SCP_8202_SCTPkg_EB2in90_2to1.25_SCTLong.jpg 2000w" sizes="auto, (max-width: 960px) 100vw, 960px" /></a><figcaption class="wp-element-caption">SCT 2” 90º Everbrite (SCP-8202)</figcaption></figure> </div> </div> <p>The Schmidt-Cassegrain Rich Field Kit (SCP-8202) includes a 2-inch Everbrite diagonal with an adapter tube to allow attachment to the common 2-inch-24 TPI thread of modern SCTs (use reducing thread if that accessory is included with your large SCT).</p> <p><strong>2004: 20 Years Ago <strong>— </strong>Emerald Anniversary</strong></p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-5 column1-desktop-grid__row-1 column2-desktop-grid__span-7 column2-desktop-grid__start-6 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><span style="text-decoration: underline;"><a href="https://bit.ly/TVOXYMount" target="_blank" rel="noreferrer noopener">X-Y Adjustable Mount AAM-0001 and SCT Version AAC-0002</a></span><br>The X-Y Adjustable mount is used for mounting the Tele Vue-60 telescope onto a Tele Vue ring-mount or Schmidt-Cassegrain scopes 8″ or larger. This allows for using the Tele Vue-60 as a “superfinder”.</p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <div class="wp-block-group is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group TVOSidebar TVOSidebarBlue is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image alignright is-resized"><img loading="lazy" decoding="async" width="300" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png" alt="" class="wp-image-81107" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png 300w, https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1-150x150.png 150w" sizes="auto, (max-width: 300px) 100vw, 300px" /></figure> <p><strong>Also in 2004 …</strong><br>Kenenisa Bekele of Ethiopia set a 5000-meter record of 12m 49.6s at the Birmingham Indoor Grand Prix in Birmingham, UK on 20 Feb 2004.</p> </div> </div> </div> </div> <div style="height:34px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-6 column2-desktop-grid__start-7 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-top"> <figure data-wp-context="{"imageId":"6740076a8e63c"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1400" height="562" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-1400x562.jpg" alt="" class="wp-image-81012" srcset="https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-1400x562.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-700x281.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-150x60.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-768x308.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1-1536x617.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/AAM_0001_AccessoryX-YMount-1.jpg 2000w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">X-Y Adjustable Mount Tele Vue(AAM-0001)</figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none is-vertically-aligned-top"> <figure data-wp-context="{"imageId":"6740076a8f6ae"}" data-wp-interactive="core/image" class="wp-block-image alignleft size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1400" height="781" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-1400x781.jpg" alt="" class="wp-image-81010" style="object-fit:cover" srcset="https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-1400x781.jpg 1400w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-150x84.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-768x428.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-1536x856.jpg 1536w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/AAC_0002_-XY_for_SCT.jpg 2000w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">X-Y Adjustable Mount SCT (AAC-0002)</figcaption></figure> </div> </div> <p><span style="text-decoration: underline;"><a href="http://bit.ly/QRFinderM" target="_blank" rel="noreferrer noopener">Quick Release Universal Finder Mount QFM-1008</a></span><br>This finder mount attaches to the accessory slots found on all Tele Vue mount ring options to allow the use of 50-mm finder scopes. The dual-ring mount has six screws to allow finder scope alignment to your main scope and a built-in Dovetail (QRD-1006) that slots into the Quick Release Bracket (QRB-1002) that is mounted onto the accessory slot. The QRD-1006 and QRB-1002 combo are also standard equipment on Starbeam (SRT-2010) and can be used to convert other accessories like Sol Searcher and Qwik Point Finder into quick release versions.</p> <figure data-wp-context="{"imageId":"6740076a90640"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="676" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/QFM_1008_FinderMnt-676x800.jpg" alt="" class="wp-image-8058" style="width:auto;height:250px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/QFM_1008_FinderMnt-676x800.jpg 676w, https://televue.com/televueopticstalk/wp-content/uploads/QFM_1008_FinderMnt-338x400.jpg 338w, https://televue.com/televueopticstalk/wp-content/uploads/QFM_1008_FinderMnt-127x150.jpg 127w, https://televue.com/televueopticstalk/wp-content/uploads/QFM_1008_FinderMnt.jpg 761w" sizes="auto, (max-width: 676px) 100vw, 676px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">Quick Release Universal <br>Finder Mount QFM-1008 </figcaption></figure> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-5 column1-desktop-grid__row-1 column2-desktop-grid__span-7 column2-desktop-grid__start-6 column2-desktop-grid__row-1 column1-tablet-grid__span-3 column1-tablet-grid__row-1 column2-tablet-grid__span-5 column2-tablet-grid__start-4 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><strong>2009: 15 Years Ago <strong>— </strong>Ruby Anniversary</strong><br>The 10-mm and 21-mm were the last of the ground breaking 100° Ethos line released. These are two noteworthy focal lengths as the 10-mm filled a gap in the series and the 21-mm was as far as we could extend the focal length and true field of view and still stay true to David’s original Ethos performance goals. Both models share all the performance attributes and features of the other Ethos models. The 10-mm is a dual 1¼-inch/2-inch barrel design, while the 21-mm is 2-inch only.</p> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <div class="wp-block-group TVOSidebar TVOSidebarBlue is-layout-constrained wp-block-group-is-layout-constrained"> <figure class="wp-block-image alignright is-resized"><img loading="lazy" decoding="async" width="300" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png" alt="" class="wp-image-81107" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png 300w, https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1-150x150.png 150w" sizes="auto, (max-width: 300px) 100vw, 300px" /></figure> <p><strong>Also in 2009 …</strong><br>Usain Bolt (Jamaica) sets records in the 60-meter (6.31″), 100-meter (9.58″), 150-meter (14.44″), and 200-meter (19.19″) at the 12th IAAF World Championships in Athletics in Berlin, Germany held in August 2009. He also reset the record for the 150-meter straight-line run of 14.35″ at the Manchester City Games held 17 May 2009 in Manchester, UK.</p> </div> </div> </div> <div style="height:24px" aria-hidden="true" class="wp-block-spacer"></div> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVOETHOSMobile" data-type="link" data-id="http://bit.ly/TVOETHOSMobile" target="_blank" rel="noreferrer noopener">Ethos 10mm</a></span><br>Our “Some Holes Just Need to be Filled!” ad campaign for the 10mm showed a giant version of the eyepiece on the floor of White Rim Canyon in Utah with the other Ethos eyepieces arrayed on either side of the canyon walls. We were making the point that this new eyepiece filled the large gap between the 8mm and 13mm Ethos.</p> <blockquote class="wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow"> <p class="TVOSidebar has-small-font-size">We got our first peek through Tele Vue’s latest Ethos, the 10-mm, and its performance was truly as incredible as any in that growing family of hyperwide, supremely-corrected, high-fidelity eyepieces. You’ll have to try one in person to understand the significance of Tele Vue’s accomplishment – words cannot capture the experience.</p> <cite>“Industry News / NEAF 2009”. Astronomy Technology Today (May/June 2009). p14</cite></blockquote> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-5 column1-desktop-grid__row-1 column2-desktop-grid__span-7 column2-desktop-grid__start-6 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__small"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-full is-resized image-border-black"><a href="https://stellafane.org/help/auctions/ethos21.html" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="482" height="777" src="https://televue.com/televueopticstalk/wp-content/uploads/Ethos21_Stellefane2009.jpg" alt="" class="wp-image-80967" style="width:auto;height:500px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Ethos21_Stellefane2009.jpg 482w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos21_Stellefane2009-248x400.jpg 248w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos21_Stellefane2009-93x150.jpg 93w" sizes="auto, (max-width: 482px) 100vw, 482px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure data-wp-context="{"imageId":"6740076a92314"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized image-border-black wp-lightbox-container"><img loading="lazy" decoding="async" width="618" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-618x800.jpg" alt="" class="wp-image-80966" style="width:auto;height:500px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-618x800.jpg 618w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-309x400.jpg 309w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-116x150.jpg 116w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-768x994.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-1187x1536.jpg 1187w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-1583x2048.jpg 1583w, https://televue.com/televueopticstalk/wp-content/uploads/Ethos10_Ad_Filled-Hole_AST_V2-scaled.jpg 1978w" sizes="auto, (max-width: 618px) 100vw, 618px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button></figure> </div> </div> <p><span style="text-decoration: underline;"><a href="http://bit.ly/TVOETHOSMobile" data-type="link" data-id="http://bit.ly/TVOETHOSMobile" target="_blank" rel="noreferrer noopener">Ethos 21mm</a></span><br>At the 2009 Stellafane Convention, a prototype Ethos 21mm was auctioned off as a fundraiser to support the following year’s convention and to make capital improvements to the convention site. The winner received the eyepiece months before it was available to the general public.</p> <blockquote class="wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow"> <p class="TVOSidebar has-small-font-size">The 21mm Ethos is stunning eyepiece. The experience of true immersion in the view has to be experienced to be believed, and it delivers this with a flat field, sharpness to the edge, no astigmatism and no internal reflections. The advantage of the extra field for those of us who like to use un-driven Alt-Az mounts is fantastic and in long focal length telescopes like my 11″ SCT, you are no longer restricted to lower powers to achieve those wider fields of view.</p> <cite> Hodgson, Matthew. “Televue Ethos 21mm Review”. Alpha Lyrae (26 Feb. 2014)</cite></blockquote> <p><strong>2014: 10 Years Ago <strong>— </strong> Diamond Anniversary</strong><br>We introduced special variants of our Tele Vue-NP127is and Paracorr Type-2.</p> <div class="wp-block-group floatR maxw300 TVOSidebar TVOSidebarBlue is-layout-flow wp-block-group-is-layout-flow"> <figure class="wp-block-image alignright size-full is-resized"><img loading="lazy" decoding="async" width="300" height="300" src="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png" alt="" class="wp-image-81107" style="width:100px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1.png 300w, https://televue.com/televueopticstalk/wp-content/uploads/Olympic_pictogram_Athletics1-150x150.png 150w" sizes="auto, (max-width: 300px) 100vw, 300px" /></figure> <p><strong>Also in 2014 …</strong><br>Usain Bolt (Jamaica) sets a 100-meter sprint indoor record of 9.98″ at the Kamila Skolimowska Memorial track and field event on 23 August 2014 in Warsaw, Poland.</p> </div> <p><span style="text-decoration: underline;"><a href="https://bit.ly/NP127fliBacMOBILE" target="_blank" rel="noreferrer noopener">Tele Vue-NP127fli Astrograph</a></span><br>The idea for the NP127fli was born out of the frustration imagers have trying to piece together equipment. We worked with Finger Lakes Instrumentation (FLI) to make a truly bolt-together, “plug-n-play” imaging train. This quintuplet refractor has the same Nagler-Petzval optics as the Tele Vue-NP127is with the addition of a permanent Large Field Corrector properly spaced to accommodate the back focus of the FLI Atlas focuser, CenterLine filter wheel, and ProLine camera series. There is no problem with drawtube flexure as there is no drawtube! The scope is one solid, threaded together piece and the focus is handled by the robust Atlas focuser. The camera equipment connects to the back of the scope using the patented FLI Zero-Tilt design. Tele Vue’s unique image plane tilt correction was incorporated into the new rear section of the NP127fli to allow for the last possible tweak to the system. It is a pure, wide-field, fast focal ratio astrograph <span style="text-decoration: underline;">(</span>127mm objective, f/5.3, covering up to a 52mm diagonal sensors) capable of producing a 4.4° diagonal field of view.. Gordon Haynes has an exquisite gallery of NP127fli images on <a href="https://www.astrobin.com/users/Gordon_Haynes/" data-type="link" data-id="https://www.astrobin.com/users/Gordon_Haynes/" target="_blank" rel="noreferrer noopener">AstroBin</a>. </p> <figure data-wp-context="{"imageId":"6740076a936d9"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1400" height="516" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-1400x516.png" alt="" class="wp-image-5429" style="width:600px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-1400x516.png 1400w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-150x55.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-700x258.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-768x283.png 768w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-500x184.png 500w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2-1200x442.png 1200w, https://televue.com/televueopticstalk/wp-content/uploads/NP127FLi_Profile_2.png 1953w" sizes="auto, (max-width: 1400px) 100vw, 1400px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption"><span style="text-decoration: underline;">Tele Vue NP-127fli</span>:127mm diameter objective, 680mm focal length, f/5.3, dedicated astrographic refractor.</figcaption></figure> <blockquote class="wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow"> <p class="TVOSidebar has-small-font-size">Regarding my thoughts it is quite easy, I have used all kinds of telescopes over the years, different brands and sizes but the Tele Vue-NP127fli was the first one that was perfect out of the box, without the slightest tweak needed, plus the outstanding sharpness, field correction, and rigidity, to me it is a perfect instrument.</p> <cite><strong>Wolfgang Promper</strong></cite></blockquote> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-3 column1-desktop-grid__row-1 column2-desktop-grid__span-8 column2-desktop-grid__start-5 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure data-wp-context="{"imageId":"6740076a94a53"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="467" height="800" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-467x800.jpg" alt="" class="wp-image-965" style="width:163px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-467x800.jpg 467w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-88x150.jpg 88w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-234x400.jpg 234w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-768x1315.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy-500x856.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/VIP_3010_BigParacorrT2-copy.jpg 1168w" sizes="auto, (max-width: 467px) 100vw, 467px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">BIG Paracorr Type-2 </figcaption></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <p><span style="text-decoration: underline;"><a href="http://bit.ly/2ESQprN" data-type="link" data-id="http://bit.ly/2ESQprN" target="_blank" rel="noreferrer noopener">BIG Paracorr VIP-3010</a></span><br>Following the lead of the Big Barlow, we decided to name the larger 3-inch coma corrector the BIG Paracorr Type-2. The need for a larger diameter Paracorr arose from the proliferation of ever faster Newtonians being used for imaging. It is really only necessary for imaging through fast Newtonians with up to 52mm diagonal sensors. Visually, the 2″ Paracorr can handle the maximum field that can be used with fast Newtonians without noticeable vignetting. At f/3, the Big Paracorr shrinks star images at the edge of the field of view to 25 times smaller than without any correction – making it an essential accessory for wide-field imaging through fast Newtonians with big chips. Back focal length has been extended to 80mm over the 2″ Paracorr to allow for additional accessories to be placed in the optical path. The optical assembly is topped with a “stop” flange having 3.40″-24 pitch threads to mount camera adapters and spacer tubes. Ask your scope builder to include one in your next build.</p> <p></p> </div> </div> <figure data-wp-context="{"imageId":"6740076a9591f"}" data-wp-interactive="core/image" class="wp-block-image aligncenter size-full is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1040" height="780" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on-async--click="actions.showLightbox" data-wp-on-async--load="callbacks.setButtonStyles" data-wp-on-async-window--resize="callbacks.setButtonStyles" src="https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup.jpg" alt="" class="wp-image-1005" style="width:600px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup.jpg 1040w, https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup-150x113.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup-533x400.jpg 533w, https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup-768x576.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/JayButler_BigParacorrSetup-500x375.jpg 500w" sizes="auto, (max-width: 1040px) 100vw, 1040px" /><button class="lightbox-trigger" type="button" aria-haspopup="dialog" aria-label="Enlarge image" data-wp-init="callbacks.initTriggerButton" data-wp-on-async--click="actions.showLightbox" data-wp-style--right="state.imageButtonRight" data-wp-style--top="state.imageButtonTop" > <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12"> <path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" /> </svg> </button><figcaption class="wp-element-caption">Jay Butler’s imaging system consists of a 10″ f/4.1 Astro Systeme Austria ASA10N Newtonian astrograph with Tele Vue 3″ BIG Paracorr coma corrector. Imaging is done with an SBIG FW8G-STXL filter wheel with Baader filters. The camera is the SBIG STXL-16200M. All rights reserved. Used by permission.</figcaption></figure> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <p class="nogap"><strong>More Info</strong></p> <ul class="wp-block-list"> <li><a href="http://bit.ly/TVOYEPSFll" target="_blank" rel="noreferrer noopener">Why Choose Tele Vue Eyepieces</a> (<a href="http://bit.ly/TVOYEPSMobile" target="_blank" rel="noreferrer noopener">mobile version</a>)</li> <li><a href="http://bit.ly/TVOYTVSCOPE" target="_blank" rel="noreferrer noopener">Why Choose Tele Vue Telescopes</a> (<a href="http://bit.ly/TVOYTVSCOPEMobile" target="_blank" rel="noreferrer noopener">mobile site</a>) and warranty info</li> </ul> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> <wfw:commentRss>https://televue.com/televueopticstalk/2024/02/28/2024-tele-vue-product-anniversaries/feed/</wfw:commentRss> <slash:comments>1</slash:comments> </item> <item> <title>The Survey Says … !</title> <link>https://televue.com/televueopticstalk/2024/01/25/the-survey-says/</link> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Thu, 25 Jan 2024 15:33:36 +0000</pubDate> <category><![CDATA[Eyepiece]]></category> <category><![CDATA[Quality]]></category> <category><![CDATA[2024]]></category> <category><![CDATA[survey]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=80898</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/01/25/the-survey-says/" title="The Survey Says … !" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>Introduction In the last blog post we asked you to take a brief survey on Eyepiece Features and you came]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/01/25/the-survey-says/" title="The Survey Says … !" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <figure class="wp-block-image aligncenter size-full image-border-black"><img loading="lazy" decoding="async" width="945" height="201" src="https://televue.com/televueopticstalk/wp-content/uploads/2024epsurveyopeningscreen.jpg" alt="" class="wp-image-80909" srcset="https://televue.com/televueopticstalk/wp-content/uploads/2024epsurveyopeningscreen.jpg 945w, https://televue.com/televueopticstalk/wp-content/uploads/2024epsurveyopeningscreen-700x149.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/2024epsurveyopeningscreen-150x32.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/2024epsurveyopeningscreen-768x163.jpg 768w" sizes="auto, (max-width: 945px) 100vw, 945px" /><figcaption class="wp-element-caption">Opening screen of Eyepiece Survey.</figcaption></figure> <p><strong>Introduction</strong> <br>In the last blog post we asked you to take a brief survey on Eyepiece Features and you came through with over 700 responses. That’s more than we expected and most everyone had an opinion for every question (the most votes the “No Opinion” option received was 4%). So why is this so important to people? Look at the diagram below. At a glance, where does the telescope end and eyepiece begin?</p> <figure class="wp-block-image aligncenter size-full image-border-black"><img loading="lazy" decoding="async" width="1080" height="601" src="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV.jpg" alt="" class="wp-image-148" srcset="https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV.jpg 1080w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/TelescopeEPRayTrace_AFOV_TFOV-800x445.jpg 800w" sizes="auto, (max-width: 1080px) 100vw, 1080px" /></figure> <p>One is useless without the other for visual use. As astrophysicist and Lumicon founder Dr. Jack Marling said many years ago and still holds true, “your eyepiece is half the telescope, use the best – Tele Vue.” What follows is a look at the results for each of the questions in the survey.</p> <p><strong>1) Having adjustable height eyeguard on long eye-relief eyepieces?</strong><br>Long eye-relief eyepieces are great for eyeglass wearers, but viewers without glasses find hovering too far over the eyeguard disconcerting. Hovering above the eyepiece can allow extraneous light to interfere with contrast of the image. That’s why all our long eye-relief eyepieces (Nagler Type-4, DeLite, Delos, 55mm Plössl and 41mm Panoptic) include an adjustable eyeguard that aids in properly positioning your eye to the exit pupil, minimizing “pupil shadowing” and reducing stray light to give you the highest contrast for those “faint fuzzies.” This feature works by sliding the eyeguard barrel, while looking through the eyepiece, until you just see the full field with your peripheral vision. This adjustability does add extra size, weight, and cost to the eyepiece – is it worth it to our survey takers? Yes it is: over three-quarters of poll respondents rated this feature as “Very important” or “Somewhat important” on a long eye-relief eyepiece.</p> <p><strong>2) Having rubber grip rings on eyepieces?</strong><br>Where possible, the black anodized, aluminum upper barrels of our eyepieces have rubber grip rings. Grip rings help you hold onto the eyepiece in cold weather and under warm weather dewing conditions. Over 80% deemed this feature “Very important” or “Somewhat important”.</p> <div class="wp-block-group TVOSidebar maxw350 floatR is-layout-flow wp-block-group-is-layout-flow"> <p><strong>Minimize Scope Rebalancing Issues</strong></p> <figure class="wp-block-image size-medium is-resized"><img loading="lazy" decoding="async" width="368" height="400" src="https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-368x400.jpg" alt="" class="wp-image-80900" style="width:300px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-368x400.jpg 368w, https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-736x800.jpg 736w, https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-138x150.jpg 138w, https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-768x835.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy-1413x1536.jpg 1413w, https://televue.com/televueopticstalk/wp-content/uploads/BEC_0005_2to1.25_Eq_Bronze-copy.jpg 1840w" sizes="auto, (max-width: 368px) 100vw, 368px" /><figcaption class="wp-element-caption">BEC-0005: 2″ to 1¼” bronze Equalizer</figcaption></figure> <p>Our lovely bronze Equalizer (BEC-0005) 2″ to 1.25″ adapter minimizes telescope rebalancing when switching between heavy 2″ and lighter 1.25″ eyepieces. The Equalizer weighs 12 oz / 340 g which is three times what our comparable aluminum model weighs. Just put your smaller eyepieces into the Equalizer and use it interchangeably with your 2″ eyepieces.</p> </div> <p><strong>3) Having safety undercuts in the eyepiece barrel?</strong><br>Our chrome plated 2″ and 1.25″eyepiece barrels include safety undercuts. It turns out only a trivial percentage of respondents had “No Opinion” on the utility of safety undercuts. This left the results evenly split into two camps: the “Very important” and “Somewhat important” respondents versus the “Not Important.” The “Very important” and “Somewhat important” camp has a slim 0.4% lead – but we’ll call it a tie. The “Not Important” group though was distinguished by submitting many more comments on the subject.</p> <p><strong>4) The eyepiece weight?<br>5) The eyepiece size?</strong><br>Some eyepiece design types are “scaled,” that is, one form is “scaled” to provide a range of focal lengths. Note that eye-relief, size, and weight “scale” along, but image quality and apparent field remain constant. Examples of “scaled” Tele Vue designs are Plössls, Panoptics and the Nagler Type 5. The longest focal lengths of these models are weighty indeed! The remaining designs set a particular characteristic, such as eye relief, and tailor each focal length in the series as individual designs. The size, weight and number of lens elements will vary little within a given series. Recent examples of these are our Ethos, Delos and DeLite series. In our survey, consideration of weight and size drew similar responses: over half of respondents rated these properties as “Somewhat important” with “Not Important” being the second highest choice for more than a quarter of the respondents.</p> <p><strong>6) The country of manufacture?</strong><br>Only a quarter of those surveyed thought this was “Not Important”. The “Very important” and “Somewhat important” votes differed by less than 1% and together were almost three-quarters of the vote.</p> <p><strong>7) The brand reputation?</strong><br>We are gratified that Tele Vue eyepiece designs over the past four decades have maintained their reputation for innovative designs and high quality. How do we do it? All Tele Vue eyepiece designs are created in-house and manufactured in factories that do not make competitive products. To assure outstanding manufacturing and flawless image quality, our staff in New York performs optical and cosmetic testing on every eyepiece made. We even ship Japanese-made eyepieces to our Chester, NY facility for 100% quality control and then re-ship them back to our Tele Vue Japan distributor for sales in Japan! Our poll-takers by far gave the “Brand Reputation” question the highest selection of “Very Important” votes of all the questions. If we add in the “Somewhat important” vote, the results were close to 100% that brand reputation matters.</p> <figure class="wp-block-image alignright size-full is-resized image-border-black"><a href="http://bit.ly/TVOEPCALCMOB" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="642" height="646" src="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceCalc.jpg" alt="" class="wp-image-80904" style="width:350px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceCalc.jpg 642w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceCalc-398x400.jpg 398w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceCalc-150x150.jpg 150w" sizes="auto, (max-width: 642px) 100vw, 642px" /></a><figcaption class="wp-element-caption">Input basic information about your telescope into Tele Vue’s <a href="http://bit.ly/TVOEPCALCFULL" target="_blank" rel="noreferrer noopener">Eyepiece Calculator</a> (<a href="http://bit.ly/TVOEPCALCMOB" target="_blank" rel="noreferrer noopener">mobile site</a>) to generate a custom listing showing the performance of Tele Vue eyepieces in your scope.</figcaption></figure> <p><strong>8) The length of warranty period?</strong><br>We are pleased to offer a Lifetime Limited Warranty on all eyepieces, Barlows, Powermates, and Paracorr products for the original owner. Is that important to you? Our survey shows that over 80% of the responses fell into the “Very important” and “Somewhat important” camp with a very low turnout for the “Not Important” choice.</p> <p><strong>9) Scratch resistance of the 1.25″ or 2″ barrel?</strong><br>We use chrome plated brass barrels throughout the line, which resist scratching and marring better than anodized aluminum barrels. Over three-quarters of the voters thought this feature was “Very” to “Somewhat” important.</p> <p><strong>A Note About Comments</strong><br>Thank you for all the comments submitted on the Eyepiece Survey blog post. We’ve read every one. We did not publish comments with opinions on the survey questions in order to keep the survey page neutral ground. We also didn’t want to become involved in moderating responses if an impassioned discussion thread emerged – that’s best left for the established online astronomy forums. Overly long comments or those with many questions that would best be answered over the phone were also not posted.</p> <p><strong>A Final Word</strong><br>Again, thanks for the impressive response to our survey. Since the biggest response came from our blog newsletter followers, the results reflect the opinions of these followers more than the general astronomical community.</p> <p>Tele Vue Optics, founded in 1977, has been thrilling amateur astronomers since 1979 and our mission has never wavered. It’s in the materials we choose, the designs we create, the craftsmanship we demonstrate…the images we deliver. Above all, we want your Tele Vue experience to be “…even better than you imagined.” Thanks everyone!</p> <p></p> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> </item> <item> <title>Tele Vue Eyepieces: What’s Your Opinion?</title> <link>https://televue.com/televueopticstalk/2024/01/03/tele-vue-eyepieces-whats-your-opinion/</link> <comments>https://televue.com/televueopticstalk/2024/01/03/tele-vue-eyepieces-whats-your-opinion/#comments</comments> <dc:creator><![CDATA[TVO Staff]]></dc:creator> <pubDate>Wed, 03 Jan 2024 16:36:21 +0000</pubDate> <category><![CDATA[Eyepiece]]></category> <category><![CDATA[2023]]></category> <category><![CDATA[poll]]></category> <category><![CDATA[survey]]></category> <guid isPermaLink="false">https://televue.com/televueopticstalk/?p=80729</guid> <description><![CDATA[<a href="https://televue.com/televueopticstalk/2024/01/03/tele-vue-eyepieces-whats-your-opinion/" title="Tele Vue Eyepieces: What’s Your Opinion?" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a>At Tele Vue, we never stop striving to bring you the finest in eyepiece performance. If we can make improvements,]]></description> <content:encoded><![CDATA[<a href="https://televue.com/televueopticstalk/2024/01/03/tele-vue-eyepieces-whats-your-opinion/" title="Tele Vue Eyepieces: What’s Your Opinion?" rel="nofollow"><img width="700" height="390" src="https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-700x390.jpg" class="webfeedsFeaturedVisual wp-post-image" alt="" style="display: block; margin: auto; margin-bottom: 5px;max-width: 100%;" link_thumbnail="1" decoding="async" loading="lazy" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-700x390.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-150x83.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-768x427.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey-800x445.jpg 800w, https://televue.com/televueopticstalk/wp-content/uploads/Featured_EyepieceFeaturesSurvey.jpg 1080w" sizes="auto, (max-width: 700px) 100vw, 700px" /></a> <p>At Tele Vue, we never stop striving to bring you the finest in eyepiece performance. If we can make improvements, we will, as evidenced by our eyepiece evolution.</p> <figure class="wp-block-image size-full"><a href="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="960" height="720" src="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo.jpg" alt="" class="wp-image-4075" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo.jpg 960w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo-150x113.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo-533x400.jpg 533w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo-768x576.jpg 768w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceEvo-500x375.jpg 500w" sizes="auto, (max-width: 960px) 100vw, 960px" /></a><figcaption class="wp-element-caption">Tele Vue Eyepiece Evolution Highlights</figcaption></figure> <p>Sometimes improvements are: subtle, sometimes they call for a replacement of an entire eyepiece series, and sometimes it’s a whole new eyepiece series. Ideas come from everywhere, including you, our valued customers. Every day we speak with so many amateur astronomers regarding eyepiece selection and it always boils down to their preferences. While it’s pretty easy to develop a consensus of preferable aspects and features, we thought it would be fun to give our blog readers a chance to weigh in on what’s important to you. </p> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-6 column1-desktop-grid__row-1 column2-desktop-grid__span-5 column2-desktop-grid__start-8 column2-desktop-grid__row-1 column1-tablet-grid__span-4 column1-tablet-grid__row-1 column2-tablet-grid__span-4 column2-tablet-grid__start-5 column2-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1 column2-mobile-grid__span-4 column2-mobile-grid__row-2 wp-block-jetpack-layout-gutter__nowrap wp-block-jetpack-layout-gutter__none"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="1368" height="1080" src="https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features.jpg" alt="" class="wp-image-80748" style="width:auto;height:300px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features.jpg 1368w, https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features-507x400.jpg 507w, https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features-1013x800.jpg 1013w, https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features-150x118.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/DeLite-Eyepiece-Features-768x606.jpg 768w" sizes="auto, (max-width: 1368px) 100vw, 1368px" /></a></figure> </div> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl.jpg" target="_blank" rel="noreferrer noopener"><img loading="lazy" decoding="async" width="997" height="1080" src="https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl.jpg" alt="" class="wp-image-80749" style="width:277px;height:auto" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl.jpg 997w, https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl-369x400.jpg 369w, https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl-739x800.jpg 739w, https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl-138x150.jpg 138w, https://televue.com/televueopticstalk/wp-content/uploads/Biggest-Ethos-and-Smallest-Plossl-768x832.jpg 768w" sizes="auto, (max-width: 997px) 100vw, 997px" /></a></figure> </div> </div> <div class="wp-block-jetpack-layout-grid column1-desktop-grid__span-12 column1-desktop-grid__row-1 column1-tablet-grid__span-8 column1-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1"> <div class="wp-block-jetpack-layout-grid-column wp-caption-text wp-block-jetpack-layout-grid__padding-none"> <p class="has-text-align-left">DeLite eyepieces (first two above) have 62° apparent field with 20mm eye-relief, unique sliding, locking eyeguard, and are Dioptrx-ready.<br>Ethos eyepieces (third in line) have 100° apparent field and the SX models have 110° apparent field. All have 15mm eye-relief and are Dioptrx ready.<br>Tele Vue Plössl eyepieces (last on right) have 50° apparent field (40mm has 43° apparent field) with high-index glasses to reduce astigmatism and lateral color at the field’s edge.</p> </div> </div> <div style="height:28px" aria-hidden="true" class="wp-block-spacer"></div> <p>If you care to, please take this brief 9 question opinion survey about eyepiece features. Click an answer choice to move to the next question. You can use the mouse scroll or back arrow to also move through the questions.</p> <figure class="wp-block-image aligncenter"><img loading="lazy" decoding="async" width="921" height="305" src="https://televue.com/televueopticstalk/wp-content/uploads/2024EyepieceSurveyClosed.png" alt="" class="wp-image-80894" srcset="https://televue.com/televueopticstalk/wp-content/uploads/2024EyepieceSurveyClosed.png 921w, https://televue.com/televueopticstalk/wp-content/uploads/2024EyepieceSurveyClosed-700x232.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/2024EyepieceSurveyClosed-150x50.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/2024EyepieceSurveyClosed-768x254.png 768w" sizes="auto, (max-width: 921px) 100vw, 921px" /></figure> <div style="height:0px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-jetpack-layout-grid image-border-black column1-desktop-grid__span-12 column1-desktop-grid__row-1 column1-tablet-grid__span-8 column1-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1"> <div class="wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none"></div> </div> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-group TVOSidebar is-layout-constrained wp-block-group-is-layout-constrained"> <p><strong>Meet the Tele Vue Eyepieces!</strong><br>With Tele Vue’s wide range of focal lengths and designs, you’re sure to find the right eyepieces for your scope and target object.</p> <figure class="wp-block-image aligncenter size-full is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="974" height="456" src="https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec.png" alt="" class="wp-image-77358" style="width:700px;height:undefinedpx" srcset="https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec.png 974w, https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec-700x328.png 700w, https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec-150x70.png 150w, https://televue.com/televueopticstalk/wp-content/uploads/Eyepieces_all_2020Dec-768x360.png 768w" sizes="auto, (max-width: 974px) 100vw, 974px" /></a></figure> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection.jpg" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="561" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection-561x800.jpg" alt="3x Barlow Inspection with Tom" class="wp-image-6267" style="width:250px;height:undefinedpx" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection-561x800.jpg 561w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection-281x400.jpg 281w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection-105x150.jpg 105w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection-500x712.jpg 500w, https://televue.com/televueopticstalk/wp-content/uploads/EyepieceInspection.jpg 758w" sizes="auto, (max-width: 561px) 100vw, 561px" /></a><figcaption class="wp-element-caption">Eyepiece inspection.</figcaption></figure> <p><strong>Note on Eyepiece Inspection</strong><br>Tele Vue is the only eyepiece manufacturer that puts every eyepiece through cosmetic and performance tests prior to shipment to its dealers. We are also the only manufacturer that services its eyepieces should it become necessary. Eyepiece inspection begins with the cosmetic appearance of the lenses and metalwork. Uniformity of anodizing, chrome plating, and paint applications on the barrels is assessed. The eyepiece is then checked for any naked-eye visible coating or glass defects. The next step is the optical evaluation. Each eyepiece is placed in our patented 5″ f/4 flat-field Multi-Purpose Telescope (MPT) test refractor. The variable iris on the MPT is used to inspect for internal cleanliness at f/16 and for any optical abnormalities at f/4. Only after the inspector is satisfied that the product meets our cosmetic and optical standards is the eyepiece packaged for shipping.</p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="456" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-456x800.png" alt="" class="wp-image-77360" style="width:114px;height:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-456x800.png 456w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-228x400.png 228w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans-86x150.png 86w, https://televue.com/televueopticstalk/wp-content/uploads/EN5_310_Nagler_31T5_V2a_trans.png 616w" sizes="auto, (max-width: 456px) 100vw, 456px" /></a></figure> <p><strong>Space Walk Eyepieces</strong><br>For observing with undriven scopes, particularly at higher magnifications, we highly recommend wide apparent field of view eyepieces such as 82° <a href="http://bit.ly/TVONaglerMobile" target="_blank" rel="noreferrer noopener">Nagler </a>and 100° <a href="http://bit.ly/TVOETHOSMobile" target="_blank" rel="noreferrer noopener">Ethos</a> / 110° <a href="http://bit.ly/TVOETHOSMobile" target="_blank" rel="noreferrer noopener">Ethos-SX</a> due to the larger true fields they deliver over narrower apparent field eyepieces of the same focal length. Their extreme field sharpness allows you to place a celestial object at one edge of the field and let it drift across to the other before having to reposition your scope! While this is a particular advantage at higher magnifications, at low power the larger apparent field eyepieces provide the advantage of producing a darker sky background, allowing fainter stars to be seen, than narrower apparent field eyepieces that produce the same true field. This is due to the greater magnification and corresponding smaller exit pupil size. (<a href="https://www.televue.com/mobile/TV5_page.asp?id=114" target="_blank" rel="noreferrer noopener">The Majesty Factor</a>) which makes this eyepiece class ideal for galaxy hunting! </p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="387" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans-387x800.png" alt="" class="wp-image-77361" style="width:97px;height:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans-387x800.png 387w, https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans-194x400.png 194w, https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans-73x150.png 73w, https://televue.com/televueopticstalk/wp-content/uploads/EDL_17.3_Delos_17_trans.png 523w" sizes="auto, (max-width: 387px) 100vw, 387px" /></a></figure> <p><strong>Long Eye Relief</strong><br>If you’re more comfortable with long eye relief while lingering at the eyepiece (especially for eyeglass wearers), the 31mm Nagler and 22mm Nagler have a generous 19mm of eye relief and provide wide true-field views of the heavens. Great eye relief at a more economical price is found in the long focal length members of the 68° <a href="http://bit.ly/TVOPANOPTICMobile" target="_blank" rel="noreferrer noopener">Panoptic </a>series (27mm, 35mm, and 41mm Panoptic). Our Tele Vue <a href="http://bit.ly/TVOPLOSSLMobile" target="_blank" rel="noreferrer noopener">Plössls </a>have long eye relief in the longer focal lengths (25mm, 32mm, 40mm and 55mm Plössl). Our widest field eyepieces, the Ethos and Ethos SX, have a comfortable 15mm of eye relief in all focal lengths and may be usable for some eyeglass wearers.</p> <p>Both our 72° <a href="http://bit.ly/TVODELOSBKGMOB" target="_blank" rel="noreferrer noopener">Delos </a>or 62° <a href="http://bit.ly/TVODLMobile_" target="_blank" rel="noreferrer noopener">DeLite </a>eyepiece series are the eyeglass champs with a generous 20 mm of eye relief in all focal lengths. In addition to producing razor-sharp images in even the fastest telescopes. For those who don’t wear glasses, both series feature adjustable height, locking eye-guards to keep surrounding light from degrading the naturally high contrast these eyepieces produce.</p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="438" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans-438x800.png" alt="" class="wp-image-77362" style="width:110px;height:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans-438x800.png 438w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans-219x400.png 219w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans-82x150.png 82w, https://televue.com/televueopticstalk/wp-content/uploads/EPO_410_Panoptic_41_V2a_trans.png 591w" sizes="auto, (max-width: 438px) 100vw, 438px" /></a></figure> <p><strong>Widest Possible True Field</strong><br>The Tele Vue 32mm & 40mm Plössls and 24mm Panoptic eyepieces allow you to experience the largest true field in 1¼” visual backs and the 55mm Plössl and 41mm Panoptic do the same for 2″ focusers. The 31mm Nagler and 21mm Ethos eyepieces can be used to view at higher powers in 2″ visual backs, yielding darker sky backgrounds, but with only slightly smaller true fields of view than the 2″ Plössl or Panoptic eyepieces mentioned above.</p> <figure class="wp-block-image alignright size-large is-resized"><a href="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans.png" target="_blank" rel="noopener"><img loading="lazy" decoding="async" width="375" height="800" src="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans-375x800.png" alt="" class="wp-image-77363" style="width:94px;height:200px" srcset="https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans-375x800.png 375w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans-187x400.png 187w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans-70x150.png 70w, https://televue.com/televueopticstalk/wp-content/uploads/ENZ_0306_Nagler_Zm_3_6_V2a_trans.png 506w" sizes="auto, (max-width: 375px) 100vw, 375px" /></a></figure> <p><strong>Planetary Zoom</strong><br>No need to keep swapping eyepieces to find the highest usable power and missing those fleeting moments of steady air! Our Tele Vue<a href="http://bit.ly/TVON3-6ZFull" target="_blank" rel="noreferrer noopener"> <insertspecialcharacters>Nagler 3-6-mm</insertspecialcharacters></a> Planetary Zoom (<a href="http://bit.ly/TVON3-6Mobile" target="_blank" rel="noreferrer noopener">mobile site</a>) is excellent for teasing out the fullest possible observing detail on planetary bodies in short to medium focal length scopes. It was designed for full-field sharpness for any speed telescope, high contrast and transmission for natural color rendition, low scatter, and comfortable eye relief. It is parfocal through the zoom range and has both a constant 10mm of eye-relief and 50° apparent field of view.<br><br></p> </div> <p><strong>More Info</strong></p> <ul class="wp-block-list"> <li>Visit our <a href="http://bit.ly/TVOEPCALCFULL" data-type="URL" data-id="http://bit.ly/TVOEPCALCFULL" target="_blank" rel="noreferrer noopener">Eyepiece Calculator</a> (<a href="http://bit.ly/TVOEPCALCMOB" data-type="URL" data-id="http://bit.ly/TVOEPCALCMOB" target="_blank" rel="noreferrer noopener">mobile site</a>) to find how Tele Vue eyepieces will perform in your scope.</li> <li>Read <a rel="noreferrer noopener" href="http://bit.ly/TVOYEPSFll" data-type="URL" data-id="http://bit.ly/TVOYEPSFll" target="_blank">Why Choose Tele Vue Eyepiece</a>s (<a rel="noreferrer noopener" href="http://bit.ly/TVOYEPSMobile" data-type="URL" data-id="http://bit.ly/TVOYEPSMobile" target="_blank">mobile site</a>) for more on what makes Tele Vue eyepieces special.</li> </ul> <div class="wp-block-group TVBlackBox is-layout-flow wp-block-group-is-layout-flow"> <p>Did you observe, sketch, or image with Tele Vue gear? We’ll like your social media post on that if you tag it #televue and the gear used. Example:</p> <p class="has-text-align-center"><strong>#televue #tv85 #ethos #jupiter </strong></p> <p>Do you want your Tele Vue images re-posted on Tele Vue Optics’ Social Media accounts? Use this hashtag for consideration: </p> <p class="has-text-align-center"><strong>#RPTVO</strong></p> </div> <p></p> <figure class="wp-block-image aligncenter size-full"><a href="https://televue.com/Jump/BlogHighlight.asp"><img loading="lazy" decoding="async" width="709" height="34" src="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg" alt="" class="wp-image-2181" srcset="https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight.jpg 709w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-700x34.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-150x7.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/BlogHighlight-500x24.jpg 500w" sizes="auto, (max-width: 709px) 100vw, 709px" /></a></figure> <figure class="wp-block-image size-full is-resized"><a href="https://bit.ly/TVOSHOWSm" target="_blank" rel="noopener"><img decoding="async" src="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg" alt="" class="wp-image-5783" width="630" srcset="https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px.jpg 707w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-700x1.jpg 700w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-150x1.jpg 150w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-392x1.jpg 392w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-390x1.jpg 390w, https://televue.com/televueopticstalk/wp-content/uploads/StartPartySchedule_w707px-130x1.jpg 130w" sizes="(max-width: 707px) 100vw, 707px" /></a></figure> ]]></content:encoded> <wfw:commentRss>https://televue.com/televueopticstalk/2024/01/03/tele-vue-eyepieces-whats-your-opinion/feed/</wfw:commentRss> <slash:comments>13</slash:comments> </item> </channel> </rss>