Thanks Liz. Here is tonights effort, 25th January = 13 exposures of 6 and 12 minutes with ISO 1600 and 800. Will try an individual stack of each ISO group tomorrow to see if the ISO 800 has more contrast.
For some unkown reason when I add flat frames into the stack, DSS doesn't register the bottom left area of the FOV correctly, so this image has not got any flats included.
http://i638.photobucket.com/albums/u...s/9661c260.jpg