Player One Zeus Full Frame Camera on a WO Pleiades 111 telescope (full frame capable) is producing images with ring like aberrations around the center of the image. Luminance filters are the worst. Please help me identify the cause of this aberration. See attached photo. 0001_100_SNAPSHOT_Luminance__26.48_100_2026-06-12__22-43-19_60.00_WO P111_Zeus 455M PRO_-10.10_4082_29.00.jpg
Thanks!
Your calibration procedure is wrong or the calibration files, namely flats, darks or bias are wrong.
The subtracted star core near the center of the image is a clue…
I agree that this could be caused by a calibration error; however, this looks a lot like a stray light issue. It looks to me like it could be due to reflections from the inside of a circular connector tube. Have you checked that you don’t have stray light from a poorly blackened tube?
John
Maybe a combination of both?