Air vents behind the primary mirror provide fast air exchange so that the lens cools amazingly quickly.The image is stable, even during long exposure times. mirror clamps hold the primary mirror securely in any desired position without putting pressure on the optical elements.The Edge HD telescopes’ mechanisms and lens tube have been fully overhauled:
The XLT multi-coating helps to give the EdgeHD scopes a significant performance boost compared to similar systems on the market. This also significantly improves resolution and magnitude limits in comparison to rival optical systems. As well as the coma, the Celestron Edge HD telescopes correct field curvature right up to the edge of the image. The stars at the edge expand into small rings (“doughnuts”).
Photographing this using a camera results in a noticeable image field curvature which rises towards the edge of the image field, resulting in increasing star size and aberations with larger sensors. As desired, they display stars with pin-sharp clarity, but along a curved image plane. Lots of optical systems are advertised as “astrographs”. This means that not only the coma outwith the optical axis is corrected, as is the case in currently available “coma-free” lens designs, but also field curvature. This optical system delivers distortion-free, sharp images right to the edge of the visual field. After over 50 years of success, Celestron has revolutionised the classic Schmidt Cassegrain telescope.ĮdgeHD telescopes ( "Edge High Definition") are true astrographs. The Celestron EdgeHD telescope: Corrected image - sharp right up to the edges!ĮdgeHD is the name for Celestron’s “aplanatic Schmidt Cassegrain telescope”. The excellent image sharpness means it is also an excellent system for astrophotography!
With 28cm of aperture and StarBright XLT coatings, it gathers over 1600 times more light than the naked eye alone. The 1100HD system combines the new Advanced VX computerized equatorial mount with Edge-HD optics.
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