Gordan is a Croatian software developer and amateur astrophotographer. He dabbles in planetary image processing, creating color composites from datasets such as Cassini/Huygens, as he is "somewhat underwhelmed by the frequency the Cassini Imaging Team releases color composites." His work can be viewed on his Flickr page.
Cassini captured this Titan, Rhea (lower left) and Mimas mutual event on March 25, 2015 with its narrow-angle camera. A very faint ring (G ring?) that is almost undetectable unless the photo is viewed in darkness runs horizontally between Rhea's upper limb and Mimas' disk. Several faint stars are also visible.