[kosborn (Kevin)]

Hi all,

I purchased ZWO filters (LRGB, Ha, OIII and SII) with an 8 position ZWO filter wheel last year. This has worked well with my ASI1600mm camera except that the narrowband filters produce strong reflections around bright stars as the attached picture shows (compared to the LRGB filters). I was careful to orientate the filters the correct way when I installed them so I'm pretty sure the problem is with the filters. I've certainly read of similar issues on various forums.

I'm wondering if anyone has experience with the Astronomik 6nm filters, especially combined with the ASI1600mm?

Thanks, Kevin