On the 12th, two mutual events of Jupiter's moons were waiting to be caught. The total eclipse of Europa by Ganymede started at 1:46 UT and ended at 2:01 UT (as presented on the image) and the parcial occultation (31%) started at 2:05 UT and ended at 2:17 UT.
With SkyView Pro 8" at f/10+SPC+barlow 2x.
More at: http://astro-andregoncalves.blogspot.com/2009/08/total-eclipse-and-partial-occultation.html
André Gonçalves
http://astro-andregoncalves.blogspot.com/