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Proceedings Paper

Atmospheric phase correction using the CARMA paired antennas calibration system
Author(s): Laura M. Pérez; James W. Lamb; David P. Woody; B. Ashley Zauderer; John M. Carpenter; Alberto D. Bolatto; Erik M. Leitch; Daniel P. Marrone; Lee G. Mundy; Richard L. Plambeck; Peter J. Teuben; Melvyn C. H. Wright
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Paper Abstract

High angular resolution observations are essential to understand a variety of astrophysical phenomena. The resolution of millimeter wave interferometers is limited by large and rapid differential atmospheric delay fluctuations. At the Combined Array for Research in Millimeter-wave Astronomy (CARMA) we have employed a Paired Antenna Calibration System (C-PACS) for atmospheric phase compensation in the extended array configurations (up to 2 km baselines). We present a description of C-PACS and its application. We also present successful atmospheric delay corrections applied to science observations with dramatic improvements in sensitivity and angular resolution.

Paper Details

Date Published: 6 August 2010
PDF: 6 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77333T (6 August 2010); doi: 10.1117/12.857408
Show Author Affiliations
Laura M. Pérez, California Institute of Technology (United States)
James W. Lamb, Owens Valley Radio Observatory, California Institute of Technology (United States)
David P. Woody, Owens Valley Radio Observatory, California Institute of Technology (United States)
B. Ashley Zauderer, Univ. of Maryland, College Park (United States)
John M. Carpenter, California Institute of Technology (United States)
Alberto D. Bolatto, Univ. of Maryland, College Park (United States)
Erik M. Leitch, Owens Valley Radio Observatory, California Institute of Technology (United States)
Daniel P. Marrone, Univ. of Chicago (United States)
Lee G. Mundy, Univ. of Maryland, College Park (United States)
Richard L. Plambeck, Univ. of California, Berkeley (United States)
Peter J. Teuben, Univ. of Maryland, College Park (United States)
Melvyn C. H. Wright, Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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