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
The OCS A45 was designed due to demand! FAST DOBS have very steeply converging light cones coming off the secondary mirror. Since the OCS Optics must go deeply into the converging cone to allow the Binotron 27 to rech focus, we made an optic that simply cannot be any larger in clear aperture and still be held securly in an anodized aluminum cell. The pictures speack for themselves. Used with the Bibnotron-27 Super System this optic grabs thoise outer peripheral rays missed by the OCS A37 and produces a brighter image. Alone this optic costs $249.00. Add it to a new Binotron 27 order and recieve a $100.00 discount! Please see "OCS A45 For New Binotron" under "products" and order it there IF you are also ordering any Binotron 27. A new Binotron 27 order must be placed to recieve the $149.00 price.