Celestron EDGE HD 9.25" Optical Tube, CGE rail

235 mm Aplanatic Edge HD Schmidt-Cassegrain telescope (optical tube only). The Edge HD 925 telescope uses diffraction-limited aplanatic Edge HD Schmidt-Cassegrain optics. The Edge HD optical system combines the popular compactness of Schmidt-Cassegrain telescopes with newly designed high-definition optics that deliver wide-field images with the quality typical of astrographs. When used visually, Edge HD optics provide pinpoint star images to the very edge, even with 2-inch ultra-wide-angle eyepieces. When used for astroimaging, Edge HD optics produce aberration-free images across the entire field captured by CCD or DSLR cameras, even with Full Frame formats. All Edge HD optics have been designed to produce a very flat focal plane, generating perfectly focused star images right to the extreme edge of the sensor. The Edge HD 925 is suitable for both visual and photographic use and has been designed to be modular, capable of performing optimally across focal lengths ranging from 470 to 10000 mm (with optional accessories, including those from third-party manufacturers). The XLT optical coating enhances light transmission, also offering very high contrast on both planets and deep-sky objects. Edge HD telescopes are also Fastar/Hyperstar compatible and are equipped with a primary mirror clutch system and micro-filtered side vents to speed up the process of reaching thermal equilibrium. The package includes quality accessories: a 9x50mm finderscope, a 2” Luminos 23mm ultra-wide eyepiece, a 2-inch diameter diagonal, and a CGE/Losmandy/NEQ6 dovetail bar.

Key features

Celestron quality for a reliable and rewarding observation experience.

• Diameter (mm): 235
• Focal ratio: f/10

Main technical specifications