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NGC 7023 Iris Nebula

800mm F3.9 with Exos2 PMC eight and Canon 6D 153x55s ISO3200 & 100x90s ISO 3200 subs

I took this picture on 19. September 2020. I started imaging this before full dark. As I looked at the single sub-exposures found it interesting to see how the backlight got dimmer over time. The first picture(55s) I took at 21:34 the last one (55s) I took at 0:37. You can definitely make out a difference.

Yes, I know there is a ton of Vignietting going on in my Setup. You can also see it on the left side of the Final Image. Even though I always take Flats I cannot get rid of it!

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