I am not too unhappy with the final image, but getting there was a struggle.
Once again the Dec axis found a new way to lose tracking. This time it would slowly climb to one pixel above center, hover there for a minute and drop rapidly to one pixel below center.....the graph looks like ocean waves hitting the shore. DRAT!!!! I think I balanced the mount about as good as possible. I must have a gear problem. I guess the mount needs surgury.
Goto worked okay. I polar aligned and did a "one star" alignment.....then went to "precise Goto". The scope picked Alderamin. Hitting "enter" sent the scope to it.....off center but visible in the finder. Roughly centering it and another "enter" and there was the Fireworks Galaxy in the camera FOV. Not perfect but better.
So, here is the Fireworks galaxy NGC 6946, along with cluster NGC 6939.
Orion 6" imaging Newtonian
Celestron CG5 mount
Orion ST80mm guide scope
Canon 350D unmodified
Orion Starshoot II color ccd guide camera
Deep Sky Stacker
Photo Shop CS1
NGC 6946: 43 subs @ 3 minutes per sub
used: 37 lights, 5 darks, 20 flats