Ive even modified my diagonal (Have a few prism diagonals. one with a very short length. as well as some mirror diagonals)
I swapped out the prism from one of the prism diagonals. with my best diagonals mirror. dielectric type. because I wanted a lot more focus saved.
it miraculously fit perfectly inside with no issue at all. snug friction fit with the foam strips attached to the mirror. And can even screw the metal plate on and it perfectly holds the mirror on! its amazing.
I have plentiful backfocus now!
The original diagonal body the mirror had in it was way too long (celestron diagonal body)
it's super fantastic the way I got it set up now. Lots of open
aperture in this diagonal! No vignetting even with a 40mm plossl
1.25" eyepieces and diagonals by the way. using 2" focuser adapter to attach the diagonal.
