Optical offset pointing of radio interferometers: applications at the Combined Array for Research in Millimeter-wave Astronomy

Stuartt A. Corder; Melvyn C. H. Wright; John M. Carpenter

doi:10.1117/12.857431

4 August 2010 Optical offset pointing of radio interferometers: applications at the Combined Array for Research in Millimeter-wave Astronomy

Stuartt A. Corder, Melvyn C. H. Wright, John M. Carpenter

Author Affiliations +

Proceedings Volume 7733, Ground-based and Airborne Telescopes III; 77333P (2010) https://doi.org/10.1117/12.857431
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Optical telescopes and cameras are often used to determine the initial pointing model for radio antennas. After this initial determination, the optical systems are typically not used. The Combined Array for Research in Millimeter-wave Astronomy (CARMA) has implemented optical oset pointing as a standard calibration option for science observations. We report on the proof of concept testing, the method, and the typical improvements obtained over traditional radio pointing. We conclude with a brief discussion of future directions, which may oer further improved pointing at CARMA and at other facilities that require increased pointing accuracy.

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Stuartt A. Corder, Melvyn C. H. Wright, and John M. Carpenter "Optical offset pointing of radio interferometers: applications at the Combined Array for Research in Millimeter-wave Astronomy", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77333P (4 August 2010); https://doi.org/10.1117/12.857431

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