2" SC-Thread

Our 2" Filters have a clear aperture of 46mm. Our equivalent to the L-extreme filter would be our UHC-L Ultra L-Booster Filter: https://www.baader-planetarium.com/en/baader-uhc-l-ultra-l-booster-filter.html

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
Please check out also our Digiscoping Brochure: https://www.baader-planetarium.com/en/downloads/dl/file/id/444/product/0/digiscoping_camera_adaptations_for_afocal_photography_and_eyepiece_projection.pdf

Its more a photographic tool. You can use it visually but its not very satisfying because you see an obstruction on the outside and the image is more concentrated and therefore brighter which affects the visual surface contrast

It is possible but this would require to put a center "ring.mark" onto the secondary mirror.
In the beginning of this product we planned to provide the necessary ringshaped sticker plus instructions, but we had to learn that the procedure is too difficult for most people, so we gave up on promoting the laser colli for this optical system

Sorry - you must check this for yourself. We thought we have considered all eyepieces in the market when this product was designed, but every year new eyepieces, barlows,telecentrics asf. are being announced and we did not test those.

The 2" aperture must not get restricted anywhere in the beam to not create a vignetting "bottleneck". For this reason we could not enter a 1 1/4" protective rest into the beam and - to our knowlede - no one offering a 2" diagonal does that.

We do have Adjustable pin type face wrench ø 2mm, # 2450062, but it will not fit into this adapter. However, there are several manufacturers of tools to open and repair camera lenses - with these keywords or "Camera Lens repair tool", you should easily find a suitable tool to reach these holes.