Shadows on Jupiter

Submitted by jimwcoleman

Last night on Jupiter, there was a double transit, meaning that two of Jupiter's moons cast shadows on the planet. Those are always fun to photograph and as this was my first double transit, I took great care to set up the equipment just right so that I could capture the event. In this photo collage, you can see the moons (Io and Callisto) as they move across the Jovian surface. :)