M27 taken with a Planewave CDK 17, SBIG 16803 CCD, and Chroma filters from my home observatory in Foresthill before the forest fires hit. The technique of channel swapping was used to add the narrow band filter data to the LRGB. This allowed the narrow band to layer into the image without conflict ... since cyan and red are antagonists and tend to eradicate each other when layered on top of each other.