Millions and billions - The META and BETA searches at Harvard

Details Millions and billions - The META and BETA searches at Harvard Millions and billions - The META and BETA searches at Harvard

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997abos.conf..601l&link_type=abstract

Conference Paper, Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium 161, Publisher: B

Astronomy and Astrophysics

Astronomy

2

Project Seti, Microwave Frequencies, Sky Surveys (Astronomy), H I Regions, Signal Detection, Radio Telescopes, Multibeam Antennas, Microwave Spectrometers

Scientific paper

The META and BETA searches for microwave carriers have now completed a decade of observations of the northern sky, using the 26-m radiotelescope at the Agassiz Station. META's results set limits on the prevalence of advanced civilizations transmitting carrier beacons at the H I wavelength. BETA, the next-generation search system, combines greater bandwidth with quick lookback of candidate signals and robust rejection of signals of terrestrial origin. It covers the 'waterhole' of 1.4-1.7 GHz, using a 250-million-channel spectrometer, in conjunction with a three-beam antenna system, producing a 250 Mbytes/s output stream. The philosophy, implementation, and results of these systems are described.

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