Optical Design Of The Hipparcos Telescope

J. J. Arnoux; D. Dubet; M. Fruit

doi:10.1117/12.938471

20 October 1986 Optical Design Of The Hipparcos Telescope

J. J. Arnoux, D. Dubet, M. Fruit

Proceedings Volume 0656, Contemporary Optical Instrument Design, Fabrication, and Testing; (1986) https://doi.org/10.1117/12.938471
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 re-assembled by bonding with an angle of 29 degrees, with a final wavefront distortion of lambda / 60 RMS. The final optical performances of the telescope can be summarized by a loss of MTF better than 7 % with respect to the diffraction 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.

Citation Download Citation

J. J. Arnoux, D. Dubet, and M. Fruit "Optical Design Of The Hipparcos Telescope", Proc. SPIE 0656, Contemporary Optical Instrument Design, Fabrication, and Testing, (20 October 1986); https://doi.org/10.1117/12.938471

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