Cassegrain reflector [SEP] named after
. Modern variants may have a hyperbolic primary for increased performance (for example, the Ritchey–Chrétien design); and either or both mirrors may be spherical or elliptical for ease of manufacturing.
The Cassegrain reflector is named after a published reflecting telescope design that appeared in the April 25, 1672 "Journal des sçavans" which has been attributed to Laurent Cassegrain. Similar designs using convex secondaries have been found in the Bonaventura Cavalieri's 1632 writings describing burning mirrors and Marin Mersenne's 1636 writings describing telescope designs. James Gregory
the Rockefeller Reflector, is a Cassegrain reflector.
- The Watcher Robotic Telescope is a f/14.25 robotic telescope developed by the University College Dublin and UFS. The primary function of the telescope is visual spectrum observation following Gamma-ray bursts.
- The Nishimura Telescope is a reflector commissioned by the Nagoya University and constructed by Nishimura Co. Ltd. in 2000. It was not in use as of 2009.
- The Alvan Clark Telescope is a refractor named after its maker, Alvan Clark. The telescope was first installed at Mount