![]() ![]() Superior edge performance not only creates rounder, more pleasing stars, but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. This guarantees you visibly sharp stars across some of the largest CCD chips available today. EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. While this may be acceptable for some visual observing, stars will appear out of focus at the edge when used with the flat chip sensor of a digital camera. ![]() Many optical designs that advertise themselves as "astrographs" actually only produce pinpoint stars across a curved focal plane. The optical system was designed to reduce more than just off-axis star coma it also provides an astrograph-quality flat focal plane all the way to the edge of the field of view. A 9x50 finderscope, 2 mirror diagonal for more comfortable viewing, and wide-angle 23 mm Luminos 2" eyepiece are all includedĮdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view.Celestron's premium StarBright XLT coatings provide maximum light transmission.Versatile design accommodates 2 focal ratios: native f/10 or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories.Mirror support knobs hold the mirror in place and reduce image shift during imaging Aluminum optical tube with tube vents featuring an integrated 50-mesh filter allows hot air to be released from behind the primary mirror.Experience our best optical performance with EdgeHD's aplanatic, flat field Schmidt-Cassegrain optics for pinpoint stars all the way to the edge of today's largest imaging sensors and widest eyepieces. ![]()
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