Optical Design Of The Hipparcos Telescope

J J Arnoux; D Dubet; M. Fruit

doi:10.1117/12.938448

31 October 1986 Optical Design Of The Hipparcos Telescope

J J Arnoux, D Dubet, M. Fruit

Author Affiliations +

Proceedings Volume 0655, Optical System Design, Analysis, Production for Advanced Technology Systems; (1986) https://doi.org/10.1117/12.938448
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

The design and the development of the HIPPAR-COS payload all reflective Schmidt telescope have been driven by the highly demanding challenge of reaching an accuracy of 2 milli-arcseconds (1.E-8 radians) in star position measurements. This achievement is made possible by an original optical arrangement of the telescope, based on the capability to develop the so-called "beam combiner", which consists in a reflective Schmidt corrector cut in two halves and reassembled by bonding with an angle of 29 degrees, with a final wavefront distortion of lambda / 60 RMS. The final optical performances of the tele-scope can be summarized by a loss of MTF better than 7 % with respect to the diffrac-tion limit and a chromaticity lower than 3 milliarc-seconds. After a short description of the principle of Hipparcos measurement and of the telescope optical configuration and a recall of the chromaticity concept, this paper gives a presentation of the development of the optics especially of the Beam Combiner, and technics used for the alignment and test of the telescope.

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J J Arnoux, D Dubet, and M. Fruit "Optical Design Of The Hipparcos Telescope", Proc. SPIE 0655, Optical System Design, Analysis, Production for Advanced Technology Systems, (31 October 1986); https://doi.org/10.1117/12.938448

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