Thermal Behaviour Of A Thin Meniscus For SOFIA

H.-J. Meier

doi:10.1117/12.948367

27 April 1988 Thermal Behaviour Of A Thin Meniscus For SOFIA

H.-J. Meier

Proceedings Volume 0973, Cryogenic Optical Systems and Instruments III; (1988) https://doi.org/10.1117/12.948367
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

The behaviour of a thin meniscus in the thermal environment of SOFIA was calculated for different boundary conditions. Temperature fluctuations and time constants are given for significant nodes of the thermal Finite Element (FE) model. The worst case temperature distribution within the mirror was used, to calculate the mirror's deformation and its optical wavefront aberration. The figuring process of an equivalent thin meniscus, the ESO- Very Large Telescope (VLT) mirror, was calculated and found to be very sensitive against radial thermal gradients, caused by the meniscus shape of the mirror.

Citation Download Citation

H.-J. Meier "Thermal Behaviour Of A Thin Meniscus For SOFIA", Proc. SPIE 0973, Cryogenic Optical Systems and Instruments III, (27 April 1988); https://doi.org/10.1117/12.948367

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