Last updated: 31 March 2004
Subject: Shadow transits on Jupiter with the ETX-90 RA Date: 3/28/04, 19:47 From: chrisbrown4 (email@example.com) I was able to catch the multiple shadow transits on Jupiter last night (3/28/04) using my ETX-90 RA. When I first received this telescope (xmas!) a few years ago, I was lucky enough to catch many shadow transits, some double, and quite by accident! Shadow transits were no problem with this unit, using an 8mm Televue Plossl, and they appeared as tight round balls transiting the Jovian surface, quite obvious with direct vision! Last night, my timing wasn't perfect, so I was only able to catch the shadows of Io and Ganymede, but they were quite clear, as were the numerous belts visable at 120x using a 10.5mm Meade RG Ortho, I tried my RG 7mm, but much detail was lost! I even dragged my wife out to see this event, and she was skeptical, then very impressed by the excellent contrast and resolution this little telescope is capable of, even in the city glare! It was a wonderful sight, highlighted by the fact that only one moon was visible in Jupiter's orbit at the time (Ganymede?), which I have never seen in my 10 years of observing! There is never a dull moment with the ETX 90! Chris Brown
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