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5 August 2010 Atmospheric phase correction using the CARMA paired antennas calibration system
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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