I have processed all my data of M31. Approx. 10 hrs. +.
(31x600s + 46x600s.)
The image is flawed due to one set of images without flats (lesson learned, I hope

), and limited processing skills. I have a lot to learn!
Processed in PI and Photoshop CS6.
A larger Version here:
http://www.astrobin.com/full/237843/0/
And yet another Version (With "fishy" stars) here:
http://www.astrobin.com/237886/
Captured through my William Optics 90mm With a flattener, using an Atik 383l+ color camera. Guided through a C9,25 With a Loadstar autoguider. Everything on an eq8-mount.