Space Ten-Meter Telescope (STMT) Structural And Thermal Feasibility Study Of The Primary Mirror

Pierie Y. Bely; John F. Bolton; Steven P. Neeck; Philip J. Tulkoff

doi:10.1117/12.939889

10 June 1987 Space Ten-Meter Telescope (STMT) Structural And Thermal Feasibility Study Of The Primary Mirror

Pierie Y. Bely, John F. Bolton, Steven P. Neeck, Philip J. Tulkoff

Proceedings Volume 0751, Reflective Optics; (1987) https://doi.org/10.1117/12.939889
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

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.

Citation Download Citation

Pierie Y. Bely, John F. Bolton, Steven P. Neeck, and Philip J. Tulkoff "Space Ten-Meter Telescope (STMT) Structural And Thermal Feasibility Study Of The Primary Mirror", Proc. SPIE 0751, Reflective Optics, (10 June 1987); https://doi.org/10.1117/12.939889

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