[Tropo-Bob (Bob)]

Io

I caught Io reappearing from transist at 8.19pm yesterday. Conditions were difficult being both cloudy and unstable air. Using the Vixen ED 81mm (85x), I did not see Io against Jupiter's disc at all before it reappeared.

Conditions had improved a little when I later viewed Io's shadow. The shadow appeared to fall just to the north of the NEB. Using 125x, I could not satisfactoraly determine if the shadow was really seperated from the NEB, so I changed scopes and viewed it again with my Tak FC100D. Using 148x. the shadow seemed seperated at first, but after a minute, the same doubts about being totally seperated re-emerged.


Future events, which I will attempt to view:-

30/5(around midnight) Callisto passes by Jupiter's northern pole.

1/6 & 2/6 The 'swing' of Io. Near stationary at the furtherest point of its orbit, I am hoping to see some movement in a North-South direction over a few hours as Io approaches or recedes from us in its inclinded orbital-plane. I hope this makes sense!

THANKS also to Steve & Jeff for your contributions to the thread.