Nice wide field shot but I doubt it was taken through the 12" scope. Llikely the camera was mounted piggy back on it using something like a 80 to 120mm focal length lens depending on the sensor size in a 20D, something I don't know. On the 30th Holmes was over 11 degrees from Mirfak at the bottom of the photo. Even a 12" astrograph doesn't have that field of view. Note NGC 1245, an open cluster, half way from Holmes to the right edge. It shows as a little fuzzy patch. It might be partly resolved at full resolution.

Heavy snow tonight here. I've not seen it since the 18th of November. Keep the photos coming!

Rick