[raymo]

Thanks Rex and Dunk. This target is particularly difficult for me, as it is
in view between trees for only about an hour and a half, and is only
about 30 degrees alt. It's too hard for me to take all my gear elsewhere
very often. I'll just have to take a lot of 120 secs subs over several nights. I processed this post too quickly; I'll have another go at it today
Dunk, you say that you need more subs to get rid of noise. You have the same camera as me. Maybe the difference is related in some way to the fact that you, I believe, moved on to taking separate darks etc. Also, until my PS astronomy book
arrives, and I learn something from it, I am still using only DSS for what little processing I do.
raymo