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Proceedings Paper

Heterogeneous array imaging with the CARMA Telescope
Author(s): M. C. H. Wright
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Paper Abstract

The CARMA telescope is a heterogeneous array of 10.4, 6.1 and 3.5 m antennas, with antenna configurations providing spacings from ~3.5 m to 2 km. This heterogeneous array is well suited to imaging a wide range of spatial scales. In compact configurations the heterogeneous array provides high quality short spacing data for aperture synthesis. In extended configurations, the antennas can be paired, with 6.1 and 10.4m antennas making science observations in the 3 mm and 1 mm bands, while 3.5 m antennas are simultaneously observing calibration sources within a few degrees in the 1 cm band. This unique Paired Antenna Calibration System allows us to to correct for atmospheric phase fluctuations and make images at 0.15 arcec resolution in a wide range of atmospheric seeing conditions. In this paper we discuss some results and lessons learned using these heterogeneous observing techniques. These results are relevant to all aperture synthesis arrays, including millimeter/submillimeter wavelength arrays like ALMA, and cm/m wavelength arrays like ATA and SKA.

Paper Details

Date Published: 4 August 2010
PDF: 12 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77331B (4 August 2010); doi: 10.1117/12.856707
Show Author Affiliations
M. 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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