Thank you for the help! Unfortunately, my lens is a 70-300mm f/4.5 - 6.3 which sucks. I should probably avoid 300mm in that case because that would mean a lot less light entering. To top it off I live in bortle 8 haha. That adds another issue, because increasing the ISO too much immediately overexposes the sky like crazy. I have a combination of multiple crappy conditions, I suppose I will leave tiny and dark(relatively) targets like these for darker skies and not mess with them right now.
Hey, I know its been a while since you took these, but could you by any chance tell me some of the EXIF details, namely ISO, shutter speed and number of images stacked for these images? Also, what was the bortle of the skies, and was this on a prime lens? Would you recommend going beyond 200mm for these at the expense of aperture and shutter speed(I have 70-300 Nikon kit lens). Thanks