The MAT Experiment - Observing the CMB from the Chilean Andes

Details The MAT Experiment - Observing the CMB from the Chilean Andes The MAT Experiment - Observing the CMB from the Chilean Andes

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30r.762m&link_type=abstract

American Astronomical Society Meeting, 191, #127.03

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Scientific paper

The Mobile Anisotropy Telescope (MAT) is a microwave telescope designed to measure the anisotropy in the cosmic microwave background (CMB) on degree and sub-degree angular scales. MAT has successfully completed it's first season of observations during the months of October, November, and December of 1997. The site, at an altitude of 17,000 ft (5700 m), is located near San Pedro de Atacama, Chile. It is one of the highest and dryest places on the planet and is accessible nearly year-round by road. The observing strategy is similar to that used in the Saskatoon experiment. MAT observes at 30, 40, and 144 GHz with beam sizes of 0.95(deg) , 0.65(deg) , and 0.2(deg) respectively. We observe approximately 30,000 pixels at 144 GHz with an expected sensitivity of roughly 150 mu K per 0.2(deg) X 0.2(deg) pixel, 2800 pixels at 40 GHz with a sensitivity of roughly 30 mu K per 0.65 (deg) X 0.65(deg) pixel, and 1400 pixels at 30 GHz with a sensitivity of approximately 25 mu K per 0.95(deg) X 0.95(deg) pixel. The sky coverage results in a probe of the angular power spectrum from a multipole moment of l = 50 to l = 800. Jupiter is the primary calibration source. Other planets and eta Carinae are secondary calibrators. An additional benefit of the observing strategy is an unbiased survey of a 10 degree x 30 degree patch of the galaxy at 30, 40, and 144 GHz. We are compiling a list of observed point sources at these frequencies in the galactic plane. Observations will continue next year with improved SIS detectors and a longer observing time.

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