I'm using a WO Star71 with a QHY268M and Astrodon 36mm filters. H and S filters seem to have virtually no halo, but the OIII is pretty intense. I tried reversing the filter but that had no effect, the black edging around the filter seems intact, and I put in the buckeyestargazer 3d printed masks for good measure too. I know these are some very bright stars, but even my california nebula had star halos, seems like these will be very troublesome to fix in post. Is this normal for premium filters??? Could something else be causing it in my optical train?
Edited by Synon, 01 December 2022 - 02:20 AM.