On October 12th good weather allowed me to see the rare triple shadow transit on Jupiter, and in addition seeing was excellent. Callisto’s shadow was big and somewhat fuzzy, near the south pole, while Io’s and Europa’s were tiny and sharp, at both sides of the SEB. It was very interesting to see all three shadows move across the planet for one hour! The sketch corresponds approximately to the middle of the event.
Sketch: 2HB graphite pencil on white paper, scanned and processed with Photoshop CS3
Object Name: Triple shadow transit on Jupiter
Object Type: planet and moons
Location: Asturias, Spain
Date: October 12th, 2013 5:05 UT
Instrument: 120mm f/8.3 refractor + Ortho 6mm / Nagler T6 9mm + barlow 2x (167x / 222x)