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5 August 2010 CFRP truss for the CCAT 25m diameter submillimeter-wave telescope
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David P. Woody, Stephen Padin, and 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); https://doi.org/10.1117/12.856498
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