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Proceedings Paper

Control surface mirror with local heaters
Author(s): Vladimir V. Reznichenko; V. Kulagina; Marina Lutinskaya; Yury Leonov
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Paper Abstract

The majority of wavefront disturbances of space reflector and space telescopes are due to external thermal fields variations and the optical surface deformations. Two principal methods of disturbances compensation exist: a thermostabilization by temperature gradients decreasing and the mirror surface active thermodeformation. This can be accomplished only by some thermal methods: either by temperature gradients elimination or by keeping some given temperature field. The latter method is carried out by a system of heaters and sensors located on mirror elements /1,2/. Thermal deformation correction of distortions of optical and structural elements surface is possible, too, in accordance with control system responses. A thermo-optical compensation system (TOCS) consists of individual control units which contain heaters and sensors fixed to respective mirror elements as well as electronic measurement and control units (MCU) interfaced to them Fig. 1. The MCU are made constructively of unified printed circuit boards which can be functionally divided into various zones for interfacing of input/output, memory and supply circuits.

Paper Details

Date Published: 13 September 1994
PDF: 7 pages
Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); doi: 10.1117/12.184802
Show Author Affiliations
Vladimir V. Reznichenko, S.I. Vavilov State Optical Institute (Russia)
V. Kulagina, S.I. Vavilov State Optical Institute (Russia)
Marina Lutinskaya, S.I. Vavilov State Optical Institute (Russia)
Yury Leonov, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 2361:
Second European Conference on Smart Structures and Materials

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