Did the Coma Cluster with the HS4 last nigh, 5 minute subs again, 24 subs in total out of which I chose 17. So together with the data from the 6th that totals 36 x 5-minute subs or 3-hours of total integration time on the HS4 (equivalent to 15-hours of integration time on the Sky90s). The background is MUCH cleaner compared to the single set of data, but it is not glassy smooth like my original 100 subs Hyperstar images. Question is, do I use another night of good imaging just to get a better almost noise-free background, or do I move onto another target like the Markarian Chain to get more data on that one?
