Baader O-III f/2 Ultra-Highspeed-Filters (4nm) – CMOS-optimized

Yes, all of our current filters will easily fit into the ZWO filter wheel you have mentioned. All of our mounted filters have a height of 6mm, ZWO states that all filters up to 7.5mm will fit into their filter wheel. Unfortunately, we cannot answer the question about a connection between your Samyang 135 and your ZWO filter wheel, as we do not distribute either ZWO or Samyang products. Please contact a dealer who sells these brands or ask your question in the Cloudynights forum where you are sure to get a quick and correct answer.

Our largest cell mounted filters measure 2" (50.8mm) in mechanical diameter (having a metric thread of M48). The optical clear aperture is 46 mm. In order to ease the adaptation of our 2" filters onto most camera lenses, we do produce a 2" filter-holder, to convert from the ASTRO-2" Standard (M48) into a more common photo-standard of SP54 mm ("SP"means this is not a metric thread). For adapting any cell mounted Baader 2 inch Filter onto a camera lens with 52mm front filter thread you will need: #2408166 Baader DSLR 2" Filter-Holder M48 / SP54: https://www.baader-planetarium.com/en/baader-dslr-2%22-filter-holder-m48sp54.html #2958052 Baader Lens-Adapter-Ring SP54 / M52: https://www.baader-planetarium.com/en/baader-hyperion-dt-ring-sp54m52-for-dtadapter-iiandiii-and-hyperion-eyepieces.html Based on the SP54 thread, we offer many more adapters for various camera threads, our so-called Hyperion DT-rings. https://www.baader-planetarium.com/en/catalogsearch/result/?q=sp54