Hi
I used my 6 inch Meade F6.3 Schmidt Newtonian "Cometracker" and EOS 300D. Two 5 min shots at ISO 1600 with Lumicon Oxygen 3 filter (also passes H Alpha light). Used Curves in Photoshop to neutralize excess red.
http://www.users.on.net/~josiah/temp/o3eta.jpg