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A bolometric millimeter-wave system for observations of anisotropy in the cosmic microwave background radiation on medium angular scalesWe report the performance of a bolometric system designed to measure the anisotropy of the cosmic microwave background (CMB) radiation on angular scales from 0 deg 3 min to 3 deg. The system represents a collaborative effort combining a low-background 1 m diameter balloon-borne telescope with new multimode feed optics, a beam modulation mechanism with high stability, and a four-channel bolometric receiver with passbands centered near frequencies of 3 (90), 6 (180), 9 (270), and 12 (360) cm(exp -1) (GHz). The telescope was flown three times with the bolometric receiver and has demonstrated detector noise limited performance capable of reaching sensitivity levels of Delta(T)/T(sub CMB) is approximately equal to 10(exp -5) with detectors operated at T = 0.3 K.
Document ID
19930009528
Document Type
Other
Authors
Fischer, M. L.
(California Univ. Berkeley, CA, United States)
Alsop, D. C.
(California Univ. Berkeley, CA, United States)
Cheng, E. S.
(California Univ. Berkeley, CA, United States)
Clapp, A. C.
(California Univ. Berkeley, CA, United States)
Cottingham, D. A.
(California Univ. Berkeley, CA, United States)
Gundersen, J. O.
(California Univ. Berkeley, CA, United States)
Koch, T. C.
(California Univ. Santa Barbara., United States)
Kreysa, E.
(Max-Planck-Inst. fuer Radioastronomie Bonn, Germany)
Meinhold, P. R.
(California Univ. Santa Barbara., United States)
Lange, A. E.
(California Univ. Berkeley, CA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1992
Publication Information
Publication: NASA. Goddard Space Flight Center, Goddard Visiting Scientist Program for the Space and Earth Sciences Directorate
Subject Category
Astronomy
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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