Cassegrain Reflector System

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cassegrain Reflector System

 

a type of reflector. In the Cassegrain system the image of a heavenly body is formed behind the primary parabolic mirror by the rays of light directed through an opening in it by means of a secondary convex hyperbolic mirror. The system was proposed by the French physicist N. Cassegrain in 1672.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.