Design and test of submillimeter array (SMA) chopping subreflector

Peter Cheimets

doi:10.1117/12.177252

9 June 1994 Design and test of submillimeter array (SMA) chopping subreflector

Peter Cheimets

Proceedings Volume 2200, Amplitude and Intensity Spatial Interferometry II; (1994) https://doi.org/10.1117/12.177252
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

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.

Citation Download Citation

Peter Cheimets "Design and test of submillimeter array (SMA) chopping subreflector", Proc. SPIE 2200, Amplitude and Intensity Spatial Interferometry II, (9 June 1994); https://doi.org/10.1117/12.177252

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