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Celestron EdgeHD TelescopeThe Celestron EdgeHD Telescope is a new aplanatic Schmidt Telescope design be Celestron that offers visibly sharper images,superior performance and enhanced mechanical features. This range of EdgeHD aplanatic Schmidt telescopes are designed to produce aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma, but also to give an astrograph quality flat focal plane all the way to the edge of the field of view.
True Astrograph Quality Many optical designs that advertise themselves as "astrograph" quality actually only produce pinpoint stars across a curved focal plane. 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. 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. The Celestron EdgeHD Telescope is probably the most versatile imaging scope currently available. At its native f/10 you can achieve the image scale necessary to capture the smallest of deep sky objects. With the optional reducer lens (coming soon) you can increase your field of view without sacrificing optical performance. A barlow provides you with the added power for high resolution planetary, lunar and solar imaging. And of course all EdgeHD optical tubes are Fastar® compatible for ultra fast f/2 wide field imaging. Each tube has been fitted with a removable secondary mirror and are opto-mechanically aligned on a laser bench to ensure they are axially symmetric in any configuration. Easy Collimation - With precision machined mechanics and a spherical secondary mirror, EdgeHD optics can be collimated accurately and easily to guarantee that they perform to their potential every time you use them. A recent review has confirmed that the edge of field performance is vastly improved as compared to standard designs. Even using wide field eyepieces, stars remain fairly sharp right to the edge of the field.
The Model Shown Here is the Celestron EdgeHD 8  
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