Atmospheric phase correction using the CARMA paired antennas calibration system

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

doi:10.1117/12.857408

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5 August 2010 Atmospheric phase correction using the CARMA paired antennas calibration system

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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Proceedings Volume 7733, Ground-based and Airborne Telescopes III; 77333T (2010) https://doi.org/10.1117/12.857408
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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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, and Melvyn C. H. Wright "Atmospheric phase correction using the CARMA paired antennas calibration system", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77333T (5 August 2010); https://doi.org/10.1117/12.857408

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