MarkLeica 8x20; Nikon Action 7x35; Vixen Apex Pro 8x42; Orion 15x63; Docter Nobilem 15x60WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet
Quote: Ugggggg....bad news
Johnny FS152 15" Obsession Classic w/ 14.5" f/4.65 Zambuto
Quote:This 2" mirror diagonal eats about 100-110 mm backfocus with the eyepiece clamp included, compared to a T2 prism diagonal that you can use without eyepiece clamp (with the Maxbrights) and requires only about 40 mm backfocus. That's a difference of 60-70 mm!
You will most definitely need to use a barlow lens with your binoviewer, and you lose the "wide" field capability.
Takahashi SKY90 , Vixen SP
Istar 127mm f/8 Achro , HEQ5 on TV Gibralter
C9.25 XLT carbon fiber , HEQ5 .