I am still not happy with the auto-guider accuracy, the graph showing anything up to 1 pixel plus or minus. This improved by making sure the RA axis was pulling against gravity but my next step is to recheck the polar alignment. I should be able to get to within +/- 20% of a pixel IMHO. Anyway, here is a low res image of M31 of 8 luminance subs at 240s and 1×1 binning and 5x60s RGB subs at 2×2 binning. Images were calibrated in Maxim DL, scaled in Fits Liberator using ArcSinh(x) function. Photoshop zone processing was done using curves and levels and the luminance frame then had a high pass filter applied. Finally, the LRGB frames where combined in Photoshop.
This picture really needs a focal reducer to capture more of the (rather large) Andromeda Galaxy.
M31