Equipment and other photo info:
Moon picture taken on August 8th, 2009. Celestron C10-N f/4.7 + 1.5x barlow lens + red filter + QHY5
Processing software: DeepSkyStacker, PixInsight 1.0, Photoshop CS2
Callisto is Jupiter’s 2nd largest moon, and the 3rd largest moon in the Solar System, measuring 4820 km across. Like all of the Galilean moons, it was discovered by Galileo in 1610, when he turned his rudimentary 33-power telescope to the night sky for the first time.
More information about this object at: http://www.universetoday.com/guide-to-space/jupiter/jupiters-moon-callisto/