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Thursday night Scott, Bruce W, and I went up to the SCC Observatory and spent several hours viewing Jupiter and other wonders of the night sky. The viewing conditions were very good.
Friday morning, 6 May, David and Mike went up to the observatory and mounted the new Antares guide scope on the side of the main optical tube assembly of the SCC Observatory.
Friday night, the official opening of Science Odyssey (6 – 15 May), 8 club members set up their telescopes outside the observatory and I opened the SCC Observatory to view the double shadow transit of Jupiter. members all noted that seeing was challenging and, as James put it: “Members dug in among buffeting winds (albeit warm winds) to peer into The Jovian atmosphere.” David modeled the transit using astronomy software and was able to show us the shadow position to look for. We spotted Callisto’s shadow on Jupiter and Io transiting first with the observatory telescope, the shadow skirting the north polar region about 9 PM, with the Great Red Spot crossing the central meridian. The Antares scope proved to be lined up well with the OTA.
“Neil carried out scientific research on the light pass of several different 2″ diagonals and we had opportunity to compare the views in James 11″ SCT Service Scope and Neil’s Shiny new 8” SCT with fresh Starbright XLT Coatings from the Celestron factory.
“We observed Jupiter and Moon’s, two shadow transits – there was a moon transit too not visible to us under the conditions –
Globular Clusters M3 and M13 – both beatifully resolved, Galaxies M82 (Neil),
M65, M66 (James ) and The Ring Nebula
Which appeared best in Neil 8” SCT.
“Just before departure Saturn and Mars arrived on the scene and we had tantalizing views of these distant world’s promising more detail to follow. We exited the Stargate at 12.50 am. A great night.”
Meanwhile Mike Bradley was photographing the event from his SunMoonStars Observatory:
“I could view the transit with my 5” Megrez and capture a movie for processing. Attached is the result from stacking 500 frames, taken at f20. As James said the seeing was not great and focus was hard to achieve. Thanks to the magic of stacking software the image isn’t too bad! The reddish cast to the image is because the camera has been modified for Hydrogen alpha, I’ll do some further processing to try to correct for this.”
Members will be back up at the observatory Saturday night for viewing. The SCC Observatory will be open to the public from sunrise on Monday, 9 May, for the transit of Mercury, which will last until 1140 AM.
Charles Ennis, President
At 8:18 PM PST on Friday, 6 May, one of Jupiter’s moons, Callisto, will pass in front of Jupiter. At 8:32 another Galilean moon, Io, will follow Callisto. Their two shadows will transit the planet’s surface starting at 9:39 PM. The double shadow transit will end at 10:42 PM PST. We’ll have the SCC Observatory open for this double shadow transit at 8 PM, weather permitting.