I am looking to buy a one-size-fits-all Bahtinov mask that would fit SCTs ranging from 5-12 inches, but I couldn't find one anywhere for purchase. Is there simply no demand for it or physically too awkward? I am kind of leaning towards a DIY solution of buying the biggest Bahtinov I can find (12 inch with no center hole) and simply sticking three nylon screws into 3 different slits to adjust for different OTA sizes. Anyone tried this before? Can the center of the Bahtinov mask be slightly off from the center of the OTA?
Thank you so much and clear skies~~
Edited by Class-M-Planet, 27 January 2021 - 01:50 AM.