Fantastic job Justin, you've captured it well under very difficult conditions!
Tail looks to be about 3', extending faintly out to maybe 6' in PA 80 deg.
Comes up well in an animation, attached, hope you don't mind. Here's links to my rough shots from last night and the night before, just 400D on Vixen polarie -
http://i727.photobucket.com/albums/w...an2013text.jpg (last night)
http://i727.photobucket.com/albums/w...m26Jan2013.gif (animation, 26th)
http://i727.photobucket.com/albums/w...n2013textc.jpg (26th)
Cheers -