27 June 2006 Cornell Caltech Atacama Telescope (CCAT): a 25-m aperture telescope above 5000-m altitude
Author Affiliations +
Proceedings Volume 6267, Ground-based and Airborne Telescopes; 62672C (2006); doi: 10.1117/12.668735
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States
Abstract
Cornell, California Institute of Technology (Caltech), and Jet Propulsion Lab (JPL) have joined together to study development of a 25 meter sub-millimeter telescope (CCAT) on a high peak in the Atacama region of northern Chile, where the atmosphere is so dry as to permit observation at wavelengths as short as 200 μm. The telescope is designed to deliver high efficiency images at that wavelength with a total one-half wavefront error of about 10 μm. With a 20 arc min field of view, CCAT will be able to accommodate large format bolometer arrays and will excel at carrying out surveys as well as resolving structures to the 2 arc sec resolution level. The telescope will be an ideal complement to ALMA. Initial instrumentation will include both a wide field bolometer camera and a medium resolution spectrograph. Studies of the major telescope subsystems have been performed as part of an initial Feasibility Concept Study. Novel aspects of the telescope design include kinematic mounting and active positioning of primary mirror segments, high bandwidth secondary mirror segment motion control for chopping, a Calotte style dome of 50 meter diameter, a mount capable of efficient scanning modes of operation, and some new approaches to panel manufacture. Analysis of telescope performance and of key subsystems will be presented to illustrate the technical feasibility and pragmatic cost of CCAT. Project plans include an Engineering Concept Design phase followed by detailed design and development. First Light is planned for early 2012.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas A. Sebring, Riccardo Giovanelli, Simon Radford, Jonas Zmuidzinas, "Cornell Caltech Atacama Telescope (CCAT): a 25-m aperture telescope above 5000-m altitude", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62672C (27 June 2006); doi: 10.1117/12.668735; https://doi.org/10.1117/12.668735
PROCEEDINGS
9 PAGES


SHARE
KEYWORDS
Telescopes

Mirrors

Space telescopes

Cameras

Optical instrument design

Bolometers

Galactic astronomy

RELATED CONTENT

Technical specifications of the KMTNet observation system
Proceedings of SPIE (August 04 2010)
SALT prime focus payload development
Proceedings of SPIE (September 28 2004)
Hubble Space Telescope: now and then
Proceedings of SPIE (May 28 1997)
Large telescope project dedicated to an origins survey
Proceedings of SPIE (July 07 2004)
Design Features Of The Space Telescope
Proceedings of SPIE (September 14 1977)

Back to Top