Crab Nebula, Messier 1

Messier 1, narrowband image with Hydrogen in red, Sulfur in green,, Oxygen in blue, Ha=12x20min, binned 1:1 Sii,Oiii=11x20min, binned 4:1, total 36 images taken over 12 hours through Planewave CDK20 telescope, and FLI PL16803 camera