Vixen VC200L: Wide Field Cass. OTA
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This is the VISAC (Vixen Sixth-Order Aspherical Catadioptric), 200mm, f/9. It's not a planetary instrument, but for photography (both astro & terrestrial) is is far superior to the usual Schmidt Cassegrains with a significantly wider & flatter field. Focusing is by rack & pinion, avoiding image shift problems. Included: 6x30 finder in dovetail bracket, 1.25" visual back, the 60mm Direct Wide Photo Adapter (accepts your T-ring), extension tube, caps, and dovetail mount bracket. Optics just cleaned & collimated, near mint condition. $750 + shipping.
Funding Member
