youve captured quite a lot of detail for 15 sec exposures, i had a quick look of this item for details, 140 arc sec diameter and magnitude 10.3.
might be good if you could just darken the background a little bit more to make the fainter stars pop out a bit more (probably cant go too much further without getting some noise in it), given youve got an Ha filter if have the rgb ones as well, you could add to it and put it up as a colour one at some time in the future
well done.
cheers alchemy
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