Runner Up: Jupiter on 18 October, 2010 by bgcombs
This is an incredible portrait of the solar system's largest planet. A myriad of details can be seen in the cloud patterns, including a very interesting series of dark spots at the same latitude as the Great Red Spot. It's rare to see an image of Jupiter this crisp in anything under a professional-size telescope, making this a very impressive image.
As Runner Up, bgcombs wins an Axiom LX31 eyepiece (retail value: $399)!