Astrophysics (index)about

Gregorian telescope

(type of reflecting telescope)

A Gregorian telescope is a reflector telescope with a concave ellipsoid secondary mirror reflecting through a hole in the center of the primary to a focal plane. A focal plane exists in front of the secondary. It does not flip the image, making it more useful as a terrestrial telescope than some designs. Astronomical examples:

(telescope type,reflector)

Referenced by:
reflector telescope