I came upon the CalSky Website a couple days ago. Yesterday, I checked for any events for the night and found a transit of Io and the GRS were going to take place in almost perfect sync. Due to the haze the last several nights I did not feel like hauling out the Orion Xt8 only to retrieve it later in defeat. I started observing Io's approach at about 15 minutes till midnight with the Orion 4.5” Starblast, Orion 2x Shorty Barlow and the Celestron 24mm-8mm zoom eyepiece. As Io got close, I attempted to see the leading shadow without luck. Briefly as Io completely covered the surface I could then make out the Moon and its shadow, the 3-D effect was amazing. Shortly after Io blended in with Jupiter and I could only see its shadow. I observed the tiny little black spot move across Jupiter for the next hour 45 minutes.
My first ever transit of one of Jupiter's Moons.
Edited by Star Geezer, 07 July 2020 - 02:05 PM.