Ok, I just tried a couple of things as I learn like that. :) I figured I didn’t have enough frames for proper averaging. I applied darks, but no bias yet, I’m making those again right now as I didn’t have the raw files anymore. Will post an update when those are also included.
Background neutralization indeed, but good to know it also doesn’t make a difference here, the difference I see must than have been the extra vignetting correction. I’m learning fast and liking it more and more.