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Design for CCAT, a 25 m diameter telescope operating from 200 GHz to 1.5 THz

Woody, David and Padin, Steve and Redding, Dave and Lou, John and Kissil, Andy (2011) Design for CCAT, a 25 m diameter telescope operating from 200 GHz to 1.5 THz. In: 2011 XXXth URSI General Assembly and Scientific Symposium. IEEE , Piscataway, NJ. ISBN 978-1-4244-6051-9 . https://resolver.caltech.edu/CaltechAUTHORS:20170222-173251648

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Abstract

CCAT will be a 25 m diameter Ritchey-Chretien telescope operating in the 0.2-1.5 mm wavelength range. It will be located at an altitude of 5600 m on Cerro Chajnantor in northern Chile, near the ALMA site. CCAT will have an f/0.4 primary, with an active surface to compensate gravitational and thermal deformations. The primary will be supported by a carbon fiber reinforced plastic (CFRP) space frame truss on an elevation over azimuth mount made of steel. Cameras and spectrometers with up to 1 deg field of view (FoV) will be located at the two f/6 Nasmyth foci. CCAT will be inside an enclosure to reduce wavefront and pointing errors due to wind forces and thermal deformation due to solar illumination. The key performance challenges for CCAT are a half wavefront error (HWFE) <10 μm rms and pointing error <0.2".


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/URSIGASS.2011.6051257DOIPaper
http://ieeexplore.ieee.org/document/6051257/PublisherPaper
Additional Information:© 2011 IEEE. This work was supported by the John B. and Nelly Kilroy Foundation and by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Funders:
Funding AgencyGrant Number
John B. and Nelly Kilroy FoundationUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
Record Number:CaltechAUTHORS:20170222-173251648
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170222-173251648
Official Citation:D. Woody, S. Padin, D. Redding, J. Lou and A. Kissil, "Design for CCAT, a 25 m diameter telescope operating from 200 GHz to 1.5 THz," 2011 XXXth URSI General Assembly and Scientific Symposium, Istanbul, 2011, pp. 1-4.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74481
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:23 Feb 2017 17:06
Last Modified:03 Oct 2019 16:39

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