Product no.: 51858Manufacturer: Denkmeier
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The OCS A45 was designed for fast Dobsonians. They have very steeply converging light cones coming off the secondary mirror. Since the OCS (Optical Corrector System) Optics must go deeply into the converging cone to allow the Binotron 27 to rech focus, Denkmeier 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 Binotron-27 Super System this optic grabs those outer peripheral rays missed by the OCS A37 and produces a brighter image!
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