Lee, I've tried every setting known to man and it just won't show me anything darker than the moon in Nebulosity. It does show stars in Envision, at least I think they are stars, but are very strange shapes. I've fiddled with white and dark settings, changed exposures etc. Tracking on the mount isn't perfect, but is pretty good over 2 -3 minutes.Its very frustrating, as I used to get quite good images with my old Praktika film camera and no tracking.
Think I'll give the imaging bit a rest and go back to what got me interested in Astronomy in the first place, just looking