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Proceedings Paper

Design and test of submillimeter array (SMA) chopping subreflector
Author(s): Peter Cheimets
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Paper Abstract

The Smithsonian Astrophysical Observatory (SAO) is constructing an array of antennas that is expected to be placed on Mauna Kea and operated at submillimeter wavelengths. To facilitate calibration work in single dish mode, each antenna is equipped with a subreflector that chops about its center of mass. In addition to chopping, the subreflector's position is controlled by three actuators permitting the mirror position to be corrected for the effects of temperature and pointing elevation. This paper discuses the specifications, design, fabrication, and performance testing of the chopping subreflector system.

Paper Details

Date Published: 9 June 1994
PDF: 12 pages
Proc. SPIE 2200, Amplitude and Intensity Spatial Interferometry II, (9 June 1994); doi: 10.1117/12.177252
Show Author Affiliations
Peter Cheimets, Smithsonian Astrophysical Observatory (United States)

Published in SPIE Proceedings Vol. 2200:
Amplitude and Intensity Spatial Interferometry II
James B. Breckinridge, Editor(s)

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