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Proceedings Paper

Space Ten-Meter Telescope (STMT) Structural And Thermal Feasibility Study Of The Primary Mirror
Author(s): Pierie Y. Bely; John F. Bolton; Steven P. Neeck; Philip J. Tulkoff
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Paper Abstract

The structural and thermal behavior of a ten-meter primary mirror for a space optical/near-IR telescope in geosyn-chronous orbit is studied. The glass-type lightweighted mirror is monolithic, of the double arch type, and is supported at only three points. The computer programs SSPTA (thermal), NASTRAN (finite element), and ACCOS V (optical) are used in sequence to determine the temperature, deformation, and optical performance of the mirror. A mirror temperature of 130°K or less appears to be obtainable by purely passive means. With a fused silica or standard Zerodur . blank, thermally induced deformation is unacceptable and cannot be fully corrected by an active secondary mirror over the desired field. Either active thermal control or a blank of lower thermal expansion coefficient would be required.

Paper Details

Date Published: 10 June 1987
PDF: 8 pages
Proc. SPIE 0751, Reflective Optics, (10 June 1987); doi: 10.1117/12.939889
Show Author Affiliations
Pierie Y. Bely, Space Telescope Science Institute (United States)
John F. Bolton, NASA/Goddard Space Flight Center (United States)
Steven P. Neeck, NASA/Goddard Space Flight Center (United States)
Philip J. Tulkoff, Swales & Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 0751:
Reflective Optics
Dietrich G. Korsch, Editor(s)

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