Quote:
Originally Posted by Octane
Use DBE.
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+1 PI: DBE
I prefer number per row to be 7 or 9 to force the subtracted image to be smooth. Any sampled points close to bright objects I move away to avoid glow effecting the removal image. Likewise milky way and nebulosity move sample points away.
I tend to crop first after integration to centre my item of interest before DBE to avoid vignetting and edge of shot artifacts, So the DBE has a good plate to work off. plenty of online tutorials on using DBE, its difficult to ever get it wrong once you go through one.