It's very impressive seen a Jupiter's satellite (Io in this case) casting a shadow against the planet surface.

This picture was recorded on 28th August 1999 by Christian Viladrich at 1h 25m UT. It is made of 4 single exposures of 0.29 seconds each one through an 8 inches Quantum Maksutov and a Hi-SIS 22 (KAF-400).

by Christian Viladrich on 2009-05-10 17:13:06 [Original Size] - [Next Image] - [Author's gallery]