Adam,
I believe I have found the problem. It is the ELP that I am using. It emits highly in the green-blue region and very poorly in the red.. I am switching to sky flats.
Alan
Hello Adam. Thank you for your assistance. In reply,
My camera/filter combination is SBIG-STXL 11002 and Astrodon Tru-Balance LRGB I-Series CCD Filters Generation 2.
Alan
Imaging dark nebula LDN 673. So I started with 1.5 and removed everything placed on the nebula and other nebulosity of interest leaving only samples on starry fields. The results were stunning. Everything clearer, brighter, smoother. Yes.