[middy]

Let me pose a question to the learned folks on this site. Last Thursday night (2/9/10) I was out imaging Jupiter. The seeing was the best I had seen it for a while. Anyway I had taken a number of videos of Jupiter and the moon Io when I decided to do one with an overexposed Jupiter to get Io a little better with the intention of merging it with my Jupiter shot later.

Long story short ..... I noticed in the program 'Jupiter 2' that at the exact time I did the overexposed Jupiter video, give or take a minute or two, Europa was just going into occultation behind Jupiter. I was curious whether anything would show up when I processed the video. I noticed in the stacked image that there was a weird shape on the limb of Jupiter at the position where Europa was disppearing, so I resampled it by a factor of 3, maxed out all the wavelet settings and adjusted the contrast to try and show it up a little better. This is what I ended up with.

Does this look like Europa just disappearing behind Jupiter or is it wishful thinking on my part? The video was taken on 2nd Sept 2010, 23:36 UTC+10. The mysterious shape just happens to be at the exact position where 'Jupiter 2' shows Europa to be disappearing.

The second picture is one of the final Jupiter images I ended up with, just for the record. I really need another barlow to get more image scale.