Justin Cowart is a geologist and amateur astronomer living in Carbondale, IL. Justin has had a lifelong interest in exploring space, and one of the most fun ways to satisfy that curiosity has been looking at the images returned by space missions. His interests lie in reprocessing old data (which looks surprisingly good when it's run through modern computers!) and finding aesthetically-pleasing images that may not have gotten noticed otherwise. He can be found on Twitter as @jccwrt, and on Flickr.
Cassini mosaic of Saturn's moon Dione, taken on 11 October 2005 during Cassini's rev 16. This image was taken from a distance of about 22,000 km as the spacecraft was approaching for a targeted flyby. This mosaic combines a high-resolution imaging sequence along the daylit horizon with a lower-resolution image that covers parts of the Saturn-lit nightside not covered in the high-resolution mosaic.