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Compact Configuration Evaluation

Melvyn Wright

Radio Astronomy laboratory, University of California, Berkeley


Keywords: Antenna Configurations, Image Simulations

In this memo, we compare the imaging performance of 3 compact configurations. We have written MIRIAD scripts to simulate imaging with ALMA, and pipeline the results into tables. We present a table of beam FWHM, brightness sensitivity and sidelobe levels as a function of declination. Single field images for source diameters 8, 16, 24, and 32 arcsec are also analyzed. Based on these results, 2 compact arrays appear sufficient. Omitting an extended N-S compact configuration is operationally simpler and saves about $1M.

View a pdf version of ALMA Memo #428.

Download a postscript version of ALMA Memo #428.

Last modified: 2002-06-20