This Week: London Calling!

European AstroFest 2018 at the Widescreen Centre stand (left-to-right): Dr. Simon Bennett, David Nagler, Richard Day, Sasha Kostyaev.

This week’s AstroFest 2019 show, at the Kensington Conference and Events Centre in London, inaugurates Tele Vue’s exhibition season. I’ll once again be guest of The Widescreen Centre. Want to talk about Tele Vue eyepieces? Have questions on DIOPTRX? Need advice on imaging with Tele Vue telescopes? Please find me at The Widescreen Centre stand in the Exhibition hall, open 9am to 6pm, on February 8th and 9th.  You can find complete details on the Exhibition Hall on the AstroFest website.

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Sunday’s Lunar Eclipse Recap!

At Tele Vue we were stunned with the clarity and “3D effect” of this ghostly image of the red eclipsed Moon hanging in the sky against a starry background. (This is not a composite: those are actual dim stars near the limb of the full Moon!) Kudos to Bruno Yporti for planning and creating this image. Imaging details: Tele Vue-85 APO refractor with Tele Vue 2x Powermate and Canon 6D DSLR on an Atlas EQ-G mount. This is a 6-second exposure at ISO 1600 with effective focal length of 1,200mm. Taken at 03:20:33 local time (UTC -2). Eclipse Lunar Total by Instagram user Bruno Yporti. All rights reserved. Used by permission.
It’s summer in the southern hemisphere and Bruno Yporti, in Londrina, State of Paraná, Brazil, had great weather for imaging last Sunday’s Total Lunar Eclipse of the “Supermoon” over the Americas. At his private, roll-off roof, “Ophiuchus Observatory”, he readied his Tele Vue-85 APO refractor with Tele Vue 2x Powermate and Canon 6D DSLR on an Atlas EQ-G mount for the event. The sky was clear, with almost no wind, when he took the above single exposure — about 8-minutes after mid-totality. In this phase of the eclipse, the Moon was illuminated by the refracted light skimming along the entire circumference of the Earth. The deep-red light bathing the Moon is what we see at sunrise and sunset on the horizon. 

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Don’t Miss the Lunar Eclipse & Jupiter / Venus Conjunction!

(Left) Blue Moon Eclipse by AstroBin user Joe Beyer. Copyright Joe Beyer. Used by permission. (Right) January 2019 Jupiter and Venus conjunction.
Sky watchers are in for a double-treat with lunar and planetary events on the schedule in the next few days. Brilliant Jupiter and Venus dazzle in the morning as the planets approach conjunction. Sunday night in the Americas will be dominated by the total lunar eclipse. 
 

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Happy Holidays from Comet 46P/Wirtanen

At only 30-lunar distances from Earth, Comet 46P/Wirtanen brightened to magnitude 3.6 as it brushed by our planet on December 16th — just 4-days after perihelion (closest to sun). The anticipation of this close pass-by engaged the attention of many amateurs that observed and imaged this “dirty-snowball” in the weeks leading up to the fly-by.  But the most iconic image of this comet’s apparition was made two-weeks before its closest approach to Earth.

46P/Wirtanen, Moon Size Comparison by flickr user Mike Broussard. All rights reserved. Used by permission. Imaged with Tele Vue-85 APO and Tele Vue TRF-2008 0.8x Reducer/Flattener for f/5.6. Camera used was Canon T3 with IDAS-LPS (Light Pollution) filter. Exposure at ISO 3200 for 40×120 sec. Image taken Dec 2, 2018 at 03:05 UT.

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Uranus Opposition October 23rd

Uranus by Instagram user astrobobo. Copyright astrobobo. Used by permission. Imaged with Tele Vue 2.5x Powermate™ on Celestron EdgeHD 8″ SCT (effective focal length = 5080-mm) and ZWO ASI290MC camera.

On the 23rd, the “ice  giant” Uranus will be visible all night, as it rises when the sun sets (hence it is opposite the sun). It will also be at its largest for the year: a diminutive 3.73″ of arc. Due to its distance and close-to-circular orbit, Uranus doesn’t vary that much in brightness over time.  It will reach magnitude 5.7 from mid-October through early November before slightly fading to magnitude 5.9 in late March 2019. This makes it a naked-eye target in dark skies and easy to locate in a binocular or finderscope.

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This Week: Neptune Opposition 2018 and Comet 21P!

Neptune image by Voyager 2 probe. NASA/JPL

With the moon a waning crescent, it is a good time to pick out some faint objects in the sky.

On Friday, September 7th, Neptune rises opposite the sun and is closest to earth. Being in the sky all-night, and at it’s brightest, presents a good opportunity to sight this rarely-seen telescopic planet. Unlike the naked eye planets, you’ll have to crank-up the power to make sure you’ve really found it. Even at 100x it just looks like a magnitude 7.8 star. So don’t expect to see a Voyager 2 quality image through your eyepiece.

Click on image to enlarge. Neptune (dots showing position from Sept. 5 to 12) is just south of a line between Phi- and Lambda-Aquarii. In early September it will be moving slowly toward the Lambda star. Using your finder, or a wide-field eyepiece, setup your field on the stars labeled by magnitude inside the 5° circle. Over the course of the week, Neptune will be approaching a line drawn between the mag. 7.5 and 7.4 stars shown. Neptune will be slightly dimmer than both at mag. 7.8.  83-Aquarii it is the brightest of the stars labeled by magnitude — shining at  mag. 5.5 — and will help you orient the chart.

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Flashback: Great American Eclipse Aug. 21, 2017

Has it really been a year already?  A year since people from all-over converged on a 70-mile-wide ribbon of land, that spanned the continental United States, coast-to-coast , to gaze in awe at the Great American Eclipse. This was the first total solar eclipse to land in the contiguous United States since 1979 and the first coast-to-coast one since 1918. So, for many people, this was their first.

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July 27th: MARS Opposition and Lunar Eclipse

Mars at 7820mm (2018Jun04) on fuzzy.photos, ©Frederick Steiling.  Tele Vue 2x Powermate™ on C14 with ZWO ASI174MM camera using IRRGB filters. Image from June 4, 2018 before dust storm overtook the whole planet.

Mars will exceed 24-arc-sec in diameter between July 23rd and August 9th, 2018. This is 97 percent of the maximum of 25.13-arc-sec diameter attained during the last of the ‘favorable’ apparitions, which occurred in 2003.Association of Lunar and Planetary Observers

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BIG Mars Opposition this Month!

Earth and Mars orbit diagram representing how the opposition distance (blue lines) between the planets (Earth = green and Mars = red) can vary depending on where in their orbits the opposition takes place.

At the end of this month, on July 27th, Mars will be in opposition and reach its greatest angular diameter — 24.3-arc-seconds — for the year. This is the best opposition since 2003. It’ll be greater than 21-arc-seconds tonight and well worth observing. For an explanation as to why some oppositions are better, what to expect from this year’s event, and accessories to better view and image Mars, see our blog post: Mars Opposition 2018 Preview.
 

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