Vincenzo della Vecchia: I was kind of excited to have the chance to observe this quite rare event. Here’s the sharpest images I could get of transit of Japetus (without selective enhancement of satellite), centered on 00:35 UT. Tons of Gb went to garbage due to unfair seeing conditions. Japetus was totally invisible both on screen and at eyepiece.
Attached also an animation showing the moviment of Japetus.