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A Map of the Cosmic Microwave Background from the BEAST Experiment.

By Peter R. Meinhold, Marco Bersanelli, Jeffrey Childers, Newton Figueiredo, Todd C. Gaier, Doron Halevi, Charles R. Lawrence, Miikka Kangas, Alan Levy, Philip M. Lubin, Nazzareno M, Joshua Marvil, Jorge Mejía, Paolo Natoli, Shane Parendo, Agenor Pina, Michael D. Seiffert, Nathan C. Stebor, Fabrizio Villa, Thyrso Villela, Benjamin D. W, Brian Williams and Alexandre Wuensche


We present the first sky maps from the BEAST (Background Emission Anisotropy Scanning Telescope) experiment. BEAST consists of a 2.2 meter off axis Gregorian telescope fed by a cryogenic millimeter wavelength focal plane currently consisting of 6 Q band (40 GHz) and 2 Ka band (30 GHz) scalar feed horns feeding cryogenic HEMT amplifiers. Data were collected from two balloon-borne flights in 2000, followed by a lengthy ground observing campaign from the 3.8 Km altitude University of California White Mountain Research Station. This paper reports the initial results from the ground based observations. The instrument produced an annular map covering the sky from 33 ◦ ≤ δ ≤ 42 ◦. The maps cover an area of 2470 square degrees with an effectiv

Year: 2003
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