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Proceedings Paper

CARMA: a new heterogeneous millimeter-wave interferometer
Author(s): David P. Woody; Anthony J. Beasley; Alberto D. Bolatto; John E. Carlstrom; Andrew Harris; David W. Hawkins; James Lamb; Leslie Looney; Lee G. Mundy; Richard L. Plambeck; Stephen Scott; M. Wright
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Paper Abstract

A new Combined Array for Research in Millimeter-wave Astronomy (CARMA) interferometer is being assembled from the existing Owens Valley Radio Observatory (OVRO), the Berkeley-Illinois-Maryland Association (BIMA) millimeter interferometers and the new Sunyaev?Zeldovich Array (SZA) at Cedar Flat, a site at 2,200 m altitude in the Inyo Mountains east of OVRO. The array will consist of 23 antennas of three different diameters, 3.5, 6.1 and 10.4 m, and will support observations in the 1 cm, 3 mm and 1.3 mm bands. The fist-light correlator is a flexible FPGA based system that will process up to 8 GHz of bandwidth on the sky for two subarrays consisting of 8 and 15 elements. The array configurations will offer antenna spacings from 5 m to 1.9 km allowing unprecedented high resolution and wide field imaging at millimeter wavelengths. Radiometers observing the 22 GHz water vapor emission line will be used to measure and correct for the water vapor induced path delay along the line of sight for each telescope and thereby minimize the time lost to “bad seeing”. This university based facility will emphasize technology development and student training along with leading edge astronomical research in areas ranging from Sunyaev-Zeldovich effect galaxy cluster surveys to studying protoplanetary disks.

Paper Details

Date Published: 8 October 2004
PDF: 12 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.552446
Show Author Affiliations
David P. Woody, California Institute of Technology (United States)
Anthony J. Beasley, California Institute of Technology (United States)
Alberto D. Bolatto, Univ. of California/Berkeley (United States)
John E. Carlstrom, Univ. of Chicago (United States)
Andrew Harris, Univ. of Maryland/College Park (United States)
David W. Hawkins, California Institute of Technology (United States)
James Lamb, California Institute of Technology (United States)
Leslie Looney, Univ. of Illinois/Urbana-Champaign (United States)
Lee G. Mundy, Univ. of Maryland/College Park (United States)
Richard L. Plambeck, Univ. of California/Berkeley (United States)
Stephen Scott, California Institute of Technology (United States)
M. Wright, Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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