I was testing my imaging gear last night and I ended up with this image of M51 from my backyard in Pomona CA, (Bortle 9 zone)
Mount: iEXOS-100 PMC-8
Camera: Canon M50
Telescope: Celestron Firstscope80eq (ST80 clone)
Guide Cam: ZWO ASI 120mini
Guide Scope Svbony sv165 (30mm/120mm F/4)
Guide Software: PHD2
Camera +Mount Control: NINA
20x120s subs (40min total integration time) ISO800
30 Flats, taken with telescope against laptop monitor at max brightness on white screen
My issue right now, is that I can't seem to remove the background at all without it taking all of M51 away with it. Additionally, there doesn't seem to be any data in the Red and Blue channels when I change up the curves and edit by color. In this case, would the best thing to do just be to add more integration time to the image and hope that the galaxy brightens up enough to not be removed with background exlusion?
All advice is appreciated, thanks!
Edited by ForestWise, 16 April 2021 - 11:35 AM.