The Fishhead Nebula is an emission nebula in the constellation Cassiopeia. It is about 70LY across located about 6000LY from earth.
This is a "filler" target which was imaged the same night as some other primary target. I captured the 4h of images for this in mid Nov 2021. This target is often shown in SHO or HOO palette but I didn't have sufficient image time to allow a palette conversion. Consequently, this is shown in its "natural" color which is basically all red.