Hi, I’m getting a strange artifact in my images — has anyone experienced something similar?
Setup:
– Askar 120 APO
– ZWO Filter Wheel
– Antlia V-Series LRGB filters
– ZWO OAG
– ASI2900MM
– SkyWatcher EQ6-R Pro
Any ideas on what might be causing it would be greatly appreciated.
Luminance Filter
Red Filter
📷 image.png
Looks a lot like the OAG prism is blocking your sensor. Loop exposures on a flat panel and adjust the depth of the OAG until its no longer darkening your FOV.
Thats your OAG pick off prism. Flats will correct it, but id be adjusting it so there is no shadow so flats are only correcting vignetting
Thanks, Noah and Alex! Tomorrow I’ll adjust the OAG. Sometimes I get overwhelmed and miss the obvious things.