Rafterman, on 26 January 2013 - 01:16 PM, said:
I have no idea, but I can say that it looks a good deal closer to the lens than the sky behind it.
Would you be able to post the original photo without cropping or resizing?
I too would like to see the original image. might give clues as to the source of the shape in question. Long exposures can be tricky for a variety of reasons.