The Crescent Nebula (NGC 6888) with surrounding Cygnus nebula.
William Optics Zenithstar 81 w/ Flat6AIII, Optolong L-eXtreme, ZWO ASI533MC-Pro (imaging), ZWO ASI120mm (guiding), Explore Scientific Exso2-GT PMC8
31.4 hours (stacked best 66%)
Stacked in PixInsight with WBPP
Split RGB Channles, Linearfit, Red=Ha, Blue*0.3+Green*0.7=Oiii
Starless: Starnet2, NoiseX, UnsharpMask, GHS, Curves, HOO combo, Curves, HT, Color Sat, Curves.
Stars: HOO combo, Starnet2 star mask, HT stretch, SCNR, inverse SCNR, Saturation, Curves.
JimmyMath AddStars to combine stars and starless.
Darktable: watermark, color zones, velvia, color contrast, local contrast, tone curve, sharpen.