Jupiter and Moon

Posted by Robert's Photos (Eau Claire, United States) on 29 March 2007 in Miscellaneous and Portfolio.

One of Jupiter's four largest moons is passing between the sun and Jupiter casting a shadow against the giant planet. This photo was taken with a modified web cam. A total of 450 frames were taken at the speed of 15 frames per sec. through a Celestron 11in telescope working at f/10. Each frame was graded and many were discarded leaving 198 frames that were aligned and combine for a single exposure time of 13.2 sec. www.RobsAstroimaging.com

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