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Proceedings Paper

Considerations of thermal and mechanical stability for IOTA
Author(s): Nathaniel P. Carleton
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Paper Abstract

This paper considers in detail the questions of mechanical stability and thermal stability that were encountered in the course of the design of the Infrared Optical Telescope Array (IOTA) installed at the Smithsonian's Whipple Observatory on Mt. Hopkins. With respect to the mechanical stability, measurements of ground vibration showed that the ground is essentially benight at the IOTA site. To insure thermal stability, the telescope support points and the beam-relay path will be slightly below ground level and well-insulated. The telescopes will reside in insulated shelter-transporter structures which will be cooled during the day. The beam relay path will be in vacuum, so that seeing effects and longitudinal dispersion will be eliminated.

Paper Details

Date Published: 1 August 1990
PDF: 7 pages
Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); doi: 10.1117/12.19288
Show Author Affiliations
Nathaniel P. Carleton, Harvard-Smithsonian Ctr. for Astrophysics (United States)

Published in SPIE Proceedings Vol. 1237:
Amplitude and Intensity Spatial Interferometry
James B. Breckinridge, Editor(s)

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