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Proceedings Paper

Thermal characterization of the support plate for the 6.5-m MMT thin-shell adaptive secondary mirror
Author(s): Troy A. Rhoadarmer; Michael Lloyd-Hart; Bruce C. Fitz-Patrick; Matthew J. Rademacher; Donald G. Bruns; J. C. Shelton
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Paper Abstract

The Multiple Mirror Telescope on Mt. Hopkins will soon be upgraded to a single 6.5 m primary mirror.An adaptive- optical system, featuring a thin-shell, adaptive-secondary mirror with 330 voice-coil actuators is being developed for this new telescope. The thin-shell mirror is supported by a thick, concave aluminum substrate which also holds the actuator control and monitoring electronics and serves as the reference surface. With the actuator electronics dissipating heat into the substrate, the thermal behavior of the aluminum reference plate becomes as important issue. This paper presents results form tow experiments designed to determine the thermal behavior of the reference plate.

Paper Details

Date Published: 11 September 1998
PDF: 13 pages
Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321642
Show Author Affiliations
Troy A. Rhoadarmer, Steward Observatory/Univ. of Arizona (United States)
Michael Lloyd-Hart, Steward Observatory/Univ. of Arizona (United States)
Bruce C. Fitz-Patrick, Steward Observatory/Univ. of Arizona (United States)
Matthew J. Rademacher, Steward Observatory/Univ. of Arizona (United States)
Donald G. Bruns, ThermoTrex Corp. (United States)
J. C. Shelton, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 3353:
Adaptive Optical System Technologies
Domenico Bonaccini; Robert K. Tyson, Editor(s)

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