You can see the shadow of Io and Europe on ther right. Io itself is not visible.
Each frame is the result of about 500 shots, stacked and processed by.
Toucam Pro at the prime focus of the C8, time is GMT+2.
Jupiter and its satellites (from left to right : Ganymède, Callisto, Io and Europa).
This is a stacking of two pictures taken by the webcam at the prime focus of the C8, a first one for the planet, and a second ,overexposed one for the satellites.