Monday, January 7, 2013

Jupiter and Moons

I have another picture of Jupiter and its moons tonight.  I also need to make a slight correction regarding the photo of Jupiter last night. The star I identified as HIP 20417A can just be identified as HIP 20417 based on the photo. It is a binary system which has both HIP 20417A and HIP 20417B but they are so close together in the photo they appear as one star.  Tonight's picture has HIP 20417 again towards the top left and off to the middle-top right is HIP 20349 which lies about 167 light years away from us.  The two easily visible moons are Europa above Jupiter and Callisto below Jupiter. Io and Ganymede are really close to Jupiter's disc tonight so you cant differentiate them from Jupiter.  There was a slight indication of Io in the photo so I darkened the area where Io was in the northwestern part of Jupiter's disc.




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