Ritchey-Chretien

Ritchey-Chretien

The Ritchey-Chrétien optical design is a specialized Cassegrain telescope designed to eliminate coma. Providing a relatively large field of view compared to a more conventional configuration.

An RC has a hyperbolic primary and a hyperbolic secondary mirror. Since RC’s optics are two optical mirror systems, they have no spectral dispersion or chromatic aberration.

Additionally, the Ritchey-Chretien does not require a refractive optics, allowing for a much wider spectral range from UV to Long Wave Infrared, making the RC a truly versatile design.

It is easy to see why RC design is so widely used by professionals.