I saw the post here:
https://app.astrobin.com/forum/topic/221500?page=1
It reminded me of something I had noticed with my own Celestron C8, so I decided to check it myself.
My C8 also shows the same kind of ring artifact in the image.
When I investigated, I was able to confirm a similarly glowing ring as well.
Does anyone else with a C8 have the same issue?
Has anyone found an effective solution or workaround for it?
I have attached a photo.