Celestron’s 11-inch EdgeHD OTA’s built-in field flattener and optic design produce sharply focused, aberration-free and coma-free flat field views, which is ideal for serious astro-imagers. The EdgeHD ensures a flat focal plane all the way across to the edge of the field-of-view for optimal imaging, yielding high definition and pinpointing stars.
Edge HD optics help you not only capture rounder, more pleasing stars but improves its resolution and limit magnitude. When it comes to the Celestron EdgeHD series coupled with Celestron's StarBright XLT coating group on every surface, EdgeHD optics gives you maximum light across the widest visual and photographic spectrum... It's a vision you'll never forget!