During Galileo's 24th orbit of Jupiter in October of 1999, it flew by its innermost large moon, Io, snapping closeup photos. However, many of those photos were scrambled by the effects of Jupiter's intense radiation belts. They were descrambled using ingenious software, but they still look rough compared with normal images. I have been exploring ways to make cosmetic improvements to the images, but the results have been dissapointing. Still, one mosaic is worth sharing, centered over Donar Fluctus (the wedge shaped feature). The color and gaps in the data have been filled in from Galileo's 3rd and 21st orbit.
Here is another version.
Processed Image Copyright Ted Stryk, Raw Data Courtesy NASA/JPL