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

Woody, David P. and Padin, Steve and Sebring, Thomas (2010) CFRP truss for the CCAT 25m diameter submillimeter-wave telescope. In: Ground-based and Airborne Telescopes III. Proceedings of SPIE. No.7733. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 77332B. ISBN 9780819482235.

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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.

Item Type:Book Section
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Additional Information:© 2010 Society of Photo-optical Instrumentation Engineers (SPIE). This work was supported by the John B. and Nelly Kilroy Foundation.
Funding AgencyGrant Number
John B. and Nelly Kilroy FoundationUNSPECIFIED
Subject Keywords:Submillimeter telescope, telescope structures, CFRP truss
Series Name:Proceedings of SPIE
Issue or Number:7733
Record Number:CaltechAUTHORS:20180718-111128825
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Official Citation:David P. Woody, Stephen Padin, Thomas Sebring, "CFRP truss for the CCAT 25m diameter submillimeter-wave telescope", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77332B (5 August 2010); doi: 10.1117/12.856498;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87959
Deposited By: Tony Diaz
Deposited On:18 Jul 2018 18:17
Last Modified:03 Oct 2019 20:01

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