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Proceedings Paper

The mechanical and thermal design and analysis of the VISTA infrared camera
Author(s): Ruben L. Edeson; Bryan M. Shaughnessy; Martin S. Whalley; Kevin Burke; John M. Lucas
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Paper Abstract

The infrared camera for the Visible and Infrared Survey Telescope for Astronomy (VISTA) sets many technical challenges for mechanical and thermal design. The flexion between optical subsystems must be minimised to maintain alignment in various camera orientations and meet performance requirements. Thermally induced stresses, atmospheric pressure and earthquake loads place high demands on structural components, some of which must also thermally isolate the cold (~70 K) detectors and optics. The success of the design hinges on the optimisation of heat flow to minimise thermal loads on the detectors whilst holding external temperatures very close to ambient to reduce misting and convective disturbances in the field of view. This paper describes the mechanical and thermal components of the design and discusses the analyses in detail.

Paper Details

Date Published: 16 September 2004
PDF: 12 pages
Proc. SPIE 5497, Modeling and Systems Engineering for Astronomy, (16 September 2004); doi: 10.1117/12.551629
Show Author Affiliations
Ruben L. Edeson, Rutherford Appleton Lab. (United Kingdom)
Bryan M. Shaughnessy, Rutherford Appleton Lab. (United Kingdom)
Martin S. Whalley, Rutherford Appleton Lab. (United Kingdom)
Kevin Burke, Rutherford Appleton Lab. (United Kingdom)
John M. Lucas, Rutherford Appleton Lab. (United Kingdom)

Published in SPIE Proceedings Vol. 5497:
Modeling and Systems Engineering for Astronomy
Simon C. Craig; Martin J. Cullum, Editor(s)

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