The Celestron EdgeHD A Flexible Imaging Platform at an Affordable Price
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The Celestron EdgeHD A Flexible Imaging Platform at an Affordable Price
The Celestron EdgeHD is an advanced, flat-field, aplanatic series of telescopes designed for visual observation and imaging with astronomical CCD cameras and full-frame digital SLR cameras. This paper describes the development goals and design decisions behind EdgeHD technology and their practical realization in 8-, 9.25-, 11-, and 14-inch apertures. We include cross-sections of the EdgeHD series, a table with visual and imaging specifications, and comparative spot diagrams for the EdgeHD and competing “coma-free” Schmidt-Cassegrain designs.
