Possible control and testing of concave telescope mirrors

Gennadi M. Popov

doi:10.1117/12.278830

18 September 1997 Possible control and testing of concave telescope mirrors

Gennadi M. Popov

Proceedings Volume 3112, Telescope Control Systems II; (1997) https://doi.org/10.1117/12.278830
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Simple testing of concave telescope mirrors is discussed. Method uses a point light source in the infinity and a small lens in front of the focus of the mirror under test. Lens consists of two spherical surfaces and can be easily manufactured. Distance of the lens from the focus of the mirror under test is about a few centimeters, therefore the lens can be fastened to an interferometer for testing optics, to Foucualt or Ronchi tester, etc. It is necessary to use a flat mirror or collimator in an optical shop; in the space it is possible to use a light of stars. It is intended to use that method for controlling of the concave hyperbolic mirror of the Space Ritchey-Chretien telescope 1.7 m in diameter and f/2.74.

Citation Download Citation

Gennadi M. Popov "Possible control and testing of concave telescope mirrors", Proc. SPIE 3112, Telescope Control Systems II, (18 September 1997); https://doi.org/10.1117/12.278830

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