Celestron CGX Equatorial 800 EdgeHD Telescope (12055) Ultima which guarantees a flat field

which guarantees a flat field across the entire imaging plane

as well as stability on CWL(central wavelength) no deviation affected by temperature change

Nature DX ED’s optical performance rivals that of more expensive binoculars

All are black anodized aluminum with anti-reflection threads for maximum contrast

Sensitivity has been improved in the near infrared light region

Celestron CGX Equatorial 800 EdgeHD Telescope (12055) Ultima which guarantees a flat fieldCGX 800 HD combines Celestron's CGX computerized equatorial mount with its acclaimed EdgeHD optical system. With 8 inches of aperture and our premium StarBright XLT coatings, the CGX 800 HD gives you over 800 times the light gathering power than the unaided eye and is the lightest and most portable telescope in its class. See the Universe in HD EdgeHD is an aplanatic, flat field Schmidt Cassegrain telescope that produces aberration free images across