![]() Each vent has an integrated 60-micron micro-mesh filter guaranteed to let warm air out without letting dust in.įastar Versatility - The EdgeHD is the most versatile imaging scope available today. Tube Vents - Cooling vents on the rear cell allow hot air to be released from behind the primary mirror. The flexible rods allow the mirror to be held in place without force or pressure on the mirror assembly, keeping the image centred in the eyepiece (or chip). Mirror Clutches - Flexible tension clutches hold the mirror in place and reduce image shift when rotating the tube around the mount. In addition to Celestron’s new optimised optical design, the EdgeHD tube has been redesigned to ensure you get the most from your optics every night. Starbright XLT® Coatings coupled with Celestron's StarBright XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum. Superior edge performance creates rounder, more pleasing stars and improves the resolution and limiting magnitude 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 other competing coma-free designs. While this may be acceptable for visual observing, stars will appear out of focus at the edge when used with a flat chip sensor of a digital camera. Many optical designs that advertise themselves as "astrograph" quality 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 to the edge of the field of view. Celestron EdgeHD is an Aplanatic Schmidt telescope designed to produce aberration-free images across a wide visual and photographic field of view.
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