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CARMA: a new heterogeneous millimeter-wave interferometer

Woody, D. P. and Beasley, A. J. and Bolatto, A. and Carlstrom, J. and Harris, A. and Hawkins, D. and Lamb, J. and Looney, L. and Mundy, L. G. and Plambeck, R. and Scott, S. and Wright, M. (2004) CARMA: a new heterogeneous millimeter-wave interferometer. In: Millimeter and Submillimeter Detectors for Astronomy II. Proceedings of SPIE. No.5498. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 30-41. ISBN 0819454303.

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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.

Item Type:Book Section
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URLURL TypeDescription
Bolatto, A.0000-0002-5480-5686
Carlstrom, J.0000-0002-2044-7665
Additional Information:© 2004 Society of Photo-optical Instrumentation Engineers (SPIE). This paper has been produced on behalf of the CARMA consortium, and represents the work of scientists, engineers and technicians at the University of California (Berkeley), the University of Maryland (College Park), the University of Illinois (Urbana-Champaign), the California Institute of Technology Owens Valley Radio Observatory and the University of Chicago. The OVRO and BIMA arrays and CARMA are partially supported by National Science Foundation grants NSF-9981546, NSF-AST9983108, NSF-AST9981363, NSF-AST991289 and NSF 011616558. The SZA is supported by NSF grants AST-0096913 and PHY-0114422, the James S. McDonnell Foundation, the David and Lucile Packard Foundation and the University of Chicago.
Funding AgencyGrant Number
James S. McDonnell FoundationUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
University of ChicagoUNSPECIFIED
Subject Keywords:Radio Astronomy; Millimeter Interferometry; Antennas; Correlator; Water Vapor Radiometry
Series Name:Proceedings of SPIE
Issue or Number:5498
Record Number:CaltechAUTHORS:20180725-084429622
Persistent URL:
Official Citation: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, "CARMA: a new heterogeneous millimeter-wave interferometer", Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.552446;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88232
Deposited By: Tony Diaz
Deposited On:25 Jul 2018 16:03
Last Modified:16 Nov 2021 00:25

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