Astrophysics (index)

Ritchey-Chrétien Telescope

(type of double reflecting telescope)

A Ritchey-Chrétien Telescope (RCT or RC) is a Reflector Telescope with a specific reflector configuration of two hyperbolic mirrors, designed to limit telescope-induced Aberrations. The Primary Mirror is hyperbolic but very close to parabolic. The secondary mirror is convex and hyperbolic. Curvature is chosen to eliminate Third-Order Coma (the cubed term of a series-expansion describing the aberration).

This design is common for large telescopes, including:

(telescope type,reflector)

Referenced by:
Large Altazimuth Telescope (BTA-6)
Dall-Kirkham Telescope
Reflector Telescope