I like it Doug..
Have you considered taking every NGC253 sub you have and stacking them? Surely you have over 10hrs worth of data? You've got half an hour in one sub hidden away there somewhere dont you? Stack them all up and show us what QHY8+VC200L megadata looks like!
One question, Some of the stars have a slight flare off them to one side (only the brightest 3) is this due to their direction away from the center of frame, or due to a slight miscollimation? I wouldnt think collimation due to the detail in the galaxy, though I've never seen this kind of thing from a VC200L before.
Alex