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Proceedings Paper

The One-Hectare Telescope
Author(s): William J. Welch; John W. Dreher
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Paper Abstract

The 1HT will be a large area telescope whose novel characteristics will be a wide field of view, continuous frequency coverage from .500 - 11 Ghz, multibeam capability, and provision for RFI mitigation built in. Its scientific motivation includes deep SETI searches, pulsar detection and investigation, galactic magnetic field mapping through many Zeemann transitions, mapping of the decrement in the cosmic background radiation seen toward galaxy clusters, observation of HI absorption toward quasars at redshifts up to z equals 2, and deep mapping of the HI distributions in the Milky Way and nearby galaxies. The array will use economies of scale to keep the costs down. It will consist of 500 - 1000 dishes of diameters in the range 3.6 m - 5 m. The dishes will be TV satellite style with wideband MMIC chip front-end amplifiers. Substantial prototype activity is under way. The feed, dish, and front-end MMIC designs are well along. A seven element test array is nearing completion. It will be used for studying RFI mitigation. By 2002, a 12 element array (PTA) which will be made up of all the final components will be operational. Final construction of the full array is expected by 2005.

Paper Details

Date Published: 3 July 2000
PDF: 11 pages
Proc. SPIE 4015, Radio Telescopes, (3 July 2000); doi: 10.1117/12.390410
Show Author Affiliations
William J. Welch, Univ. of California/Berkeley (United States)
John W. Dreher, SETI Institute (United States)


Published in SPIE Proceedings Vol. 4015:
Radio Telescopes
Harvey R. Butcher, Editor(s)

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