Diagonals - Erecting prisms - Binoviewers

This star diagonal is a very good alternative to simple prisms and mirrors which often only have a plastic body...

TS 2" Star Diagonal Mirror - 91% Reflectivity, 1.25" adapter also with compression ring...

This high quality 90-degree multi-coated mirror diagonal for refractors allows you to take advantage of the wider field...

This fully-coated erect image diagonal offers correctly oriented images with excellent sharpness and contrast...

Improving workflow, especially during astrophotography is the goal set out for the BFM II. This is not just a simple fli...

Although the Takahashi FSQ-85EDX is designed as a Petzval quadruplet, the full-format sensor coverage was not perfect an...

This set contains an eyepiece revolver, four 1,25"-eyepieces, a Barlow lens and a storage box. It combines the sharpness...

The MaxBright® II Binoviewer incorporates the knowledge aquired during thirty years of building astronomical binoviewers...

There is no better way for uncompromising Solar Observation  in white light...

There is no better way for uncompromising Solar Photography in white light...

Blocking-filter in 90° zenith mirror diagonal, for telescopes up to 1080mm focal length, and with 2 inch (50.8mm) focuse...

This Calcium-K module transforms your normal astronomical refractor telescope into a Ca-K solar telescope...