Quote:
Originally Posted by iceman
Thanks guys.
Here's a colour image of Io and Ganymede from about 20 minutes before the occultation.
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Very nice RGB Mike.
Some very nice detail on Ganymede, seems more than just changes in albedo actually looks like large scale surface detail.
The surface of Ganymede has major bright and dark regions, the dark regions are thought to contain a greater amount of rocky material while the brighter regions are thought to be dominated more by ice.
"The New Solar System" by Beatty, Petersen & Chalkin, a University text of mine, provides considerably analysis and info on this subject and a comparison with the images in it and yours is most interesting.
Very well done
Cheers
Trevor