What is this effect? re: lunar eclipse.

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MOD AcquiredTaste Veteran Member • Posts: 6,200
What is this effect? re: lunar eclipse.
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To start, I'm no astrophotographer. I've taken maybe three attempts at anything in the heavens prior to the lunar eclipse last night. Uploading the images today, I was playing around and accidentally bumped the exposure up a couple of stops in post, and I got the effect seen below. What am I seeing? What causes the bullseye, concentric circles effect?

(To make the effect perfectly obvious, I also added texture/clarity/dehaze. The second image has no post processing whatsoever.)

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