[MattT]

I’m after recommendations for a 2” O-III filter for visual, using my 6” f12 Refractor.
I have an Orion Ultrablock UHC that works quite well on some objects....the Dumbell neb is like a cotton ball with it, and barely there without it....so thumbs up from me. A google search reveals Baader seems to make filters for Celestron and Orion, so the Baader 10 nm 2” looks good, as does the Astronmik at quite a bit more cash outlay. Any others?
I have a filter drawer system on a 2” GSO dielectric diagonal so changing filters is a breeze.
Matt