Removed the stars from each sub and stacked the comet separately. Still remaining artifacts, so I didn't really nail that process. I lost all of the little galaxies as well in the smeary effect. The comet detail is quite good and I was pleased with that.

Caught C/2023 P1 Nishimura just as it cleared the houses to the East and didn't quite get an hour of 30 second shots before the sun made the sky too bright. Processing this was all but a nightmare and I obviously need a lot of practice.