The very best constructed hybrid diagonal I have ever used is/was the one by Parks Optical. VERY thickly constructed and a good grind on the mirror. If it is a prism, however, the image should be brighter. But only very modestly so.
All the best
All the best
Just a few thoughts:
8) FS-152SV sitting in the office
Japanes super lucky zen observatory garden:S Meade ETX-90 finder scope position
Hino Optical Mizar 120SL observatory model:C SR-4mm eyepiece with a 3x barlow in a 60mm refractor
8O Zeiss Victory 7x42 SFs
Having over 135 vintage oculars to play with
My life surrounded by wonderful friends and impeccable optics
