The May 29, 1919 eclipse, that happened 100-years ago this past week, will always be remembered as a key “turning point” in the history of physics. “Lights All Askew in the Heavens” exclaimed a New York Times headline while The Pittsburgh Gazette Times declared that the “Elusive ‘Fourth Dimension’ Finally Proven to Exist == Newton Theory Refuted.” Newspaper editors in 1919 were grasping at straws to explain the result of an experiment that crazily proved that star light was bent by the gravity of the Sun. Their articles on the subject introduced the names of English astronomer, Arthur Eddington, and the German scientist Albert Einstein to the public. It was Eddington that announced to the world the results of an experiment he organized to test a theory put forth by the then obscure German physicist. What made Eddington’s announcement unusual was that he was an English scientist propping up a theory from a German scientist in the acrimonious aftermath of the First World War. This was just a few months after the signing of the Treaty of Versailles.
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.
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.
The premier event of 2019 awaits the end of the year when Mercury appears to pass over the face of the sun (as seen from Earth) on November 11thfrom 12:35 to 18:04 UT. Due to its diminutive size — only 10-arc-seconds in diameter — eclipse glasses over your eyes will not do: you’ll need a properly solar filtered telescope, binocular, or telephoto lens to view it (see Viewing/Imaging Resources at bottom). Don’t miss it as the next transit of Mercury won’t be until 2032.
Imaging a rare celestial event requires advanced planning, the right equipment, and often a lot of post-processing. Tony Cook traveled from the UK to Paphos on the southwest of coast of Cyprus (we suppose for the over 300 sunny days a year) to image the 2004 Transit of Venus with his Tele Vue-85, Coronado SM60 hydrogen alpha filter, Canon 10D camera, and Losmandy GM-8 mount. The 85’s optical capabilities and airline portability often makes it a favorite for amateur astronomers chasing down rare events like this.
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.
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
Tele Vue will be exhibiting at two back-to-back shows just an hours drive north of New York City this week. The Northeast Astro-Imaging Conference (NEAIC) is Thursday and Friday and the Northeast Astronomy Forum (NEAF)is Saturday and Sunday. You can buy tickets at the door for either (follow links at end of blog post).
If you post a photo of our booth at either event on social media, use the following harshtag sequences so we can like it:
If you’re in the New York metro area the third week in April, we’ve got a lot to show you at two back-to-back shows we’ll be at: the annual Northeast Astro-Imaging Conference (NEAIC: April 19 & 20) and Northeast Astronomy Forum (NEAF: April 21 & 22) — both in Suffern, NY — about an hours drive northwest of New York City.
We’ll exhibit an updated night vision demonstrator to show you the benefits of using our visual and smartphone accessories designed for the Tactical Night Vision Company (TNVC) night vision monocular. This is the system that just won a Sky & Telescope 2018 Hot Products Award. In the coming months, Sky & Telescope will be publishing their test review of the system. You can get a preview of this review on page 63 of the April 2018 issue and looking at the image below.
This is an update on Dr. Don Bruns’s attempt to measure star-position deflection with our Tele Vue-NP101is telescope during this past August’s solar eclipse. His goal was not just to duplicate the famous 1919 experiment (by Sir Arthur Eddington that proved Dr. Einstein’s General Theory of Relativity), but to demonstrate that portable, readily available amateur equipment can produce results that rival that of professional hardware from past decades. His experiment was to “determine Einstein’s deflection to an accuracy of 1%, the best optical measurement of the deflection ever demonstrated.” He points out that a professional attempt at the 1973 eclipse achieved an error of 11%. See our blog post “Tele Vue NP101is to Test Einstein’s General Relativity” for more background.