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Askar 71F Flat Field launches from SharpStar Optics
Thursday, April 25, 2024 by Richard Harris
The Askar 71F Flat-Field is an optical tube assembly (OTA) characterized by a 71mm aperture, 490mm focal length, and an inherent focal ratio of F6.9. This model features a quadruplet air-spaced APO lens arrangement, incorporating a single ED glass element to significantly minimize chromatic aberr...
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