Thermal effects in the Solar Disk Sextant telescope

Details Thermal effects in the Solar Disk Sextant telescope Thermal effects in the Solar Disk Sextant telescope

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5249..746s&link_type=abstract

Optical Design and Engineering. Edited by Mazuray, Laurent; Rogers, Philip J.; Wartmann, Rolf. Proceedings of the SPIE, Volume

Computer Science

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1

Scientific paper

The Solar Disk Sextant (SDS) is an instrument conceived to monitor the diameter of the Sun and its oscillations. A key component of the SDS is the Beam Splitting Wedge (BSW), whose function is to provide calibration to the geometry of the focal plane. The thermal behavior of the BSW is critical, as it affects the overall performance of the instrument. Modeling the elements of the BSW and the basic thermal processes is shown to account for experimental evidences of defocusing observed in early measurements with a balloon borne prototype. Basic requirements for accurate thermal stabilization on board of the final instrument are derived.

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