Possible space telescope optics testing in space

Details Possible space telescope optics testing in space Possible space telescope optics testing in space

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3356..934p&link_type=abstract

Proc. SPIE Vol. 3356, p. 934-937, Space Telescopes and Instruments V, Pierre Y. Bely; James B. Breckinridge; Eds.

Physics

Optics

Scientific paper

Simple Ronchi testing of Ritchey-Chretien space telescope optics is discussed. Bright star is used in the infinity and Ronchi grating is situated in front of focus of the telescope under test. Ronchi patterns are to be recorded by means CCD camera. The same camera is to be used for the sky observations. Space telescope optics aberrations can be calculated from the recordings of Ronchi patterns. Aberrations can be used for the main mirror shape corrections in the space. Foucault knife test can be used instead of the Ronchi grating for independent testing of the telescope optics too.

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