SETI Surveys on the Allen Telescope Array

Details SETI Surveys on the Allen Telescope Array SETI Surveys on the Allen Telescope Array

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21347006b&link_type=abstract

American Astronomical Society, AAS Meeting #213, #470.06; Bulletin of the American Astronomical Society, Vol. 41, p.420

Astronomy and Astrophysics

Astronomy

Scientific paper

The Allen Telescope Array (ATA-42) is a centimeter-wave array of 42 six-meter dishes that allows simultaneous SETI and other radio astronomy projects. In this paper we report on initial SETI observations using several observation and RFI mitigation strategies. We conducted both "targeted” observations of selected stars and "sky survey” observations of areas of the sky. Some observations were done with the SETI project directing the pointing of the array and others were "commensal,” in a direction selected by another project. In both modes, SETI observations used an independent RF tuning and two synthesized beams pointing at stars or positions in the field of view and tuned to the same frequency band. Results of the two SETI observations were compared and used to excise interference. In some observations, each beam had a null positioned at the center of the other beam. In the long term, we plan to observe one million target stars and survey large sections of the galactic plane over the frequency range from 1 GHz to 10 GHz. Much of this work may be done in parallel with other large-scale surveys.
The first phase of the ATA was funded through generous grants from the Paul G. Allen Family Foundation. UC Berkeley, the SETI Institute, the National Science Foundation (Grant No. 0540599), Sun Microsystems, Xilinx, Nathan Myhrvold, Greg Papadopoulos, and other corporations and individual donors contributed additional funding.

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