Hi all, Did an alnighter so bit dopey now. Wanted to get the comet at the earliest possible time; but was hindered by cloud just in the comet's position. Thankfully it broke up before the sky lightened too much. This is a 3 minute exposure with 50mm lens at F3.2. The image is not cropped. I estimate the tail to be 20 degrees, although if someone knows the FOV of a 50mm lens on a Canon 20Da camera we may be able to measure it more accurately.
http://i638.photobucket.com/albums/u...s/1d5bf314.jpg