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Proceedings Paper

CFRP truss for the CCAT 25m diameter submillimeter-wave telescope
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Paper Abstract

CCAT will be a 25 m diameter submillimeter-wave telescope that will operate inside a dome located on Cerro Chajnantor in the Atacama Desert. The telescope must have high aperture efficiency at a wavelength of 350 microns and good performance out to a wavelength of 200 microns. A conceptual design for a carbon fiber reinforced plastic (CFRP) truss and primary reflector support truss has been developed. This design yields a telescope with a net ½ wave front error of <10 microns using a lookup table to adjust the segment actuators to compensate for gravitational deflections. Minor corrections may be required to compensate for the expected 20 C temperature excursions. These can be handled using a coarse lookup table.

Paper Details

Date Published: 5 August 2010
PDF: 10 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77332B (5 August 2010); doi: 10.1117/12.856498
Show Author Affiliations
David P. Woody, Owens Valley Radio Observatory, California Institute of Technology (United States)
Stephen Padin, California Institute of Technology (United States)
Thomas Sebring, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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