Hello.
I have these 2 adaptors to use on my 2 inches focuser. (I don't know how to call them). To use a 1.25 piece, I use the 1.25 to 2 inches adaptor, for my 2 inches EP, I use the 2 inches adaptor.
The 2 inches adaptor has threads inside to screw something. (I guess to screw a 2 inches filter on?)
47.8 mm
My 2 inches eyepieces has threads at
46.1 mm
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My goal would be to buy a 2 inches UHC filter and put it on the 1.25 to 2 inches adaptor (a