Jekub posted:

I have a Vixen Sphinx computer controlled mount, very accurate tracking but I took that picture on holiday so 2.5 minutes was the most I was happy with. Normally I use two scopes at home where the second one provides an image for software to correct the movement of the mount, exposure times are then only limited by the camera.

The information on the lens is correct, though I forgot to mention I used a 0.8 focal reducer / flattener which actually makes it 310mm f4.9.

Andromeda is way bigger than people think a galaxy visible from earth would be, having an angular size roughly 6 times that of the moon, it won't even fit on the chip of the 1000D if I tried imaging it with the 250mm reflector.

Quick edit, I just found this, demonstrates it better than talking angular size - http://www.noao.edu/image_gallery/html/im0606.html