Originally Posted by Tandum
It is a great shot. Can I see Venus's gravity field distorting the image?
Yes I and others noticed this effect and speculated atmosphere, but the scale was not right. The hi comopression jpeg version here makes that effect more pronounced.
I suspect it might be some sort of artifact from the stacking process. Remembering that this is a stack of about 150 images out of about 3000. So this was taken over about 3.5 minutes the disk would have moved considerably.