Heterogeneous array imaging with the CARMA Telescope

M. C. H. Wright

doi:10.1117/12.856707

4 August 2010 Heterogeneous array imaging with the CARMA Telescope

M. C. H. Wright

Proceedings Volume 7733, Ground-based and Airborne Telescopes III; 77331B (2010) https://doi.org/10.1117/12.856707
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

Citation Download Citation

M. C. H. Wright "Heterogeneous array imaging with the CARMA Telescope", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77331B (4 August 2010); https://doi.org/10.1117/12.856707

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available