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Home > Classifieds > Astromart Classifieds > CCD Cameras ASTRO > Classified #130408

For Sale: Spectra Sure-Sharp (35mm knife-edge focuser), Duoview, right-angle viewer

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Beautifully machined and finished Ronchi-type precision focusing device for any Nikon 35mm SLR camera. Outfit includes a special, dedicated t-ring that you attach to the scope. The Sure-Sharp then clamps onto this t-ring in place of a camera, for knife-edge focusing. The Duoview enables you to attach an eyepiece for acquiring and centering your target, without having to remove the eyepiece. And the right-angle viewing attachment enables you to see the Ronchi screen at a right angle, so you don't have to pinch your neck muscles straining to look up through it. Outfit is in excellent condition and comes with all original documentation. Asking $150 including shipping, or best offer in the next few days.

Paul Sterngold

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