Data from Galileo's E11 global observation of Callisto
Filed under pretty pictures, explaining image processing, Jupiter's moons, Callisto, Galileo
These six images represent the data set obtained by Galileo during its November 5, 1997 flyby of Callisto. The images were reduced in size by 50% (by binning 4 pixels into 1) before being returned to Earth, and none of them covers the entire disk of Callisto.
NASA / JPL
Ted Stryk managed to produce this global view through careful reassembly of the images and filling-in of gaps using data from other flybys.
Original image data dated on or about November 5, 1997