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Atmospheric phase correction using the CARMA paired antennas calibration system

Perez, Laura M. and Lamb, James W. and Woody, David P. and Zauderer, B. Ashley and Carpenter, John M. and Bolatto, Alberto D. and Leitch, Erik M. and Marrone, Daniel P. and Mundy, Lee G. and Plambeck, Richard L. and Teuben, Peter J. and Wright, Melvyn C. H. (2010) Atmospheric phase correction using the CARMA paired antennas calibration system. In: Ground-based and airborne telescopes III. Proceedings of SPIE (7733). Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 77333T. http://resolver.caltech.edu/CaltechAUTHORS:20110315-112752485

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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.


Item Type:Book Section
Additional Information:© 2010 SPIE. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. LMP acknowledges support for graduate studies through a Fulbright-CONICYT scholarship.
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Kenneth T. and Eileen L. Norris FoundationUNSPECIFIED
James S. McDonnell FoundationUNSPECIFIED
Caltech AssociatesUNSPECIFIED
University of ChicagoUNSPECIFIED
State of CaliforniaUNSPECIFIED
State of IllinoisUNSPECIFIED
State of MarylandUNSPECIFIED
NSFUNSPECIFIED
CARMA partner universitiesUNSPECIFIED
Fulbright-CONICYT scholarshipUNSPECIFIED
Subject Keywords:CARMA; C-PACS; atmospheric phase measurement and compensation; millimeter wavelength seeing
Record Number:CaltechAUTHORS:20110315-112752485
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110315-112752485
Related URLs:
Official Citation: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, 77333T (2010); doi:10.1117/12.857408
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22900
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Mar 2011 22:41
Last Modified:09 Jan 2013 18:10

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