Very cool double transit of Io and Europa! Io is the pinkish dot (with darker poles) near the center of Jupiter (the shadow of Io to the left). Europa is at the right of Jupiter (shadow near the edge). Notice that the shadow of Europa is fuzier than the one of Io!

5/10 seeing .. or something like that

equipment used
40 cm Dobson made by Rik ter Horst
ZWO ASI120MM