North American Nebula, processed 8 different ways

This is the same data (27 exposures, 3 minutes each) as in the previous post.  Four different ways of combining the exposures, and two different methods of removing background coloration (an overwhelming green from the light pollution filter I was using) from the resulting image.

I think the second one (“integration-ABE1-“) is best, but I was a bit slapdash in preparing the images for posting, so that may be an issue…

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