Ian Regan hails from Plymouth, Great Britain. He has a long-time passion for astronomy, particularly for the Apollo Lunar Program and unmanned exploration of the outer planets. His biggest astronomical inspiration is the late British popularizer and TV presenter, Sir Patrick Moore. A contributor to the Apollo Lunar Surface Journal, he is also an image-processor for the forthcoming big-screen film "In Saturn's Rings."
Check out Ian's work at his Flickr and YouTube accounts:
The innermost Galliean satellite, Io, coasts above the russet cloud decks of Jupiter. This Voyager 1 mosaic principally consists of 3 color composites made of orange-, green-, and blue-filtered images, all taken with the wide-angle camera on 4 March 1979. Gaps in coverage were filled by other 3-filter composites taken earlier or later the same day. North is to the right. Planet-spacecraft distance was some 1 million km.
The images for this composite were taken over a period of 4 hours on 8 July 1979 through orange, green, and blue or violet filters. Because of the long time span and Jupiter's rapid (10-hour) rotation, the cloud positions don't represent any real instantaneous view of Jupiter. Ganymede's shadow falls on the disk of Jupiter. Ganymede was actually much farther from Jupiter as seen by Voyager 2 during this observation; the distance between the two worlds has been reduced for aesthetic expediency. Voyage 2 was about 1.5 million kilometers away from Jupiter during this observation, but only 430,000 kilometers from Ganymede, which is why Ganymede appears so much larger than its shadow.