Binotron 27 Super System
After 14 years of designing binoviewers and peripheral optical systems to allow focus, power switching, filter switching and collimation, we decided to create the perfect binoviewer from scratch. We build the body,  machining and all optics to the highest tolerances. Focus is no issue in ANY telescope with this system. Included is the Binotron-27 with rubber coated body, individual focusing eyepieces that move each eyepiece up and down, not around. The eyepiece holders allow quick and easy touchup of collimation in under a minute. Note that we collimate every Binotron to the most exacting standards so you may never need to consider doing the collimation adjustment but if it ever becomes necessary, this can be accomplished in seconds. The included OCS (Optical Corrector System) consists of a dual arm power switch attached to the Binotron which produces three different magnfication factors with a single pair of eyepieces. A 2" nose section, a Middle Newtonian Spacer Tube (required only for Newtonian use), and the OCS A37 optical cell (required for Refractors and Newtonians but not for SCTs) is also included. See the User Manual for specific instructions and more details. What other Binoviewer system out there can do so much with such high quality performance? Answer: NONE!
 
Recommended Optional Accessories
OCS A45 Upgrade: Highly Recommended for Newtonians of F5 or faster: $149.00   LINK To Product 
Filter Switch: Allows 3 Filter Positions instantly; Right Filter, Left Filter and no filter: $249.00  Link To Product
Collitron Reticle: Allows you to collimate The Binotron indoors with mormal room lighting once eyepieces are loaded into the Binotron 27: $139.00  Link To Product
Denk Eyepieces: Amazing Quality, Optically Matched to 1/100mm. D21s (Pair) $549  D14s (Pair) $629  Link To Product
LOA 3D Eyepieces: For the first time ever, you can view deepsky objects in glorious 3D. Link: LOA 21 3D Deep Immersion Eyepiece Pair | denkmeier