2" Newtonian glasspath corrector, 1.7X, with built-in coma corrector (front-side with 2" filter thread)
This large glasspath corrector makes it possible to mount bino-viewers onto almost any telescope with a 2" connection! Even the owners of 'fast', i.e. short-focal length, refractors and photographic Newtonians can enjoy observing deep sky objects with both eyes, without vignetting and without light loss due to reflections, etc.
