Another one where some more data seems required - this is 13 x 4 min subs at ISO1600, 10" SCT with f/6.3 focal reducer.
This is a really gorgeous area of nebulosity in Sagittarius. Entirely unknown until last week. (to me at least
). I'll be coming back! There are parts that look like a closer view would be worthwhile - maybe without the reducer.
EDIT: So I went back last night and got 18 x 8 min subs - near enough to 2 1/2 hours data at ISO 800. With dithering (couldn't be easier - one menu item to check in PhD, one button to press in BYEOS, and it just works).
See for yourself, they are chalk and cheese - even if the lo-res jpegs here don't really show how much difference there is.
Next step is noise removal is to match the tempts better - the lights were all stable around 20 degrees, but some of the darks are up to 32 degrees and I'm sure that's adding to the noise.