A bolometric millimeter-wave system for observations of anisotropy in the cosmic microwave background radiation on medium angular scales

M. L. Fischer, D. C. Alsop, E. S. Cheng, A. C. Clapp, D. A. Cottingham, J. O. Gundersen, T. C. Koch, E. Kreysa, P. R. Meinhold, A. E. Lange, P. M. Lubin, P. L. Richards, G. F. Smoot

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

We report the performance of a bolometric system designed to measure the anisotropy of the cosmic microwave background (CMB) radiation on angular scales from 0:°3 to 3°. The system represents a collaborative effort combining a low-background l 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-1 (GHz). The telescope has been flown three times with the bolometric receiver and has demonstrated detector noise limited performance capable of reaching sensitivity levels of ΔT/TCMB ≈ 10-5 with detectors operated at T = 0.3 K.

Original languageEnglish (US)
Pages (from-to)242-252
Number of pages11
JournalAstrophysical Journal
Volume388
Issue number2
DOIs
StatePublished - Apr 1 1992
Externally publishedYes

Keywords

  • Cosmic microwave background
  • Instrumentation: photometers

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Fischer, M. L., Alsop, D. C., Cheng, E. S., Clapp, A. C., Cottingham, D. A., Gundersen, J. O., Koch, T. C., Kreysa, E., Meinhold, P. R., Lange, A. E., Lubin, P. M., Richards, P. L., & Smoot, G. F. (1992). A bolometric millimeter-wave system for observations of anisotropy in the cosmic microwave background radiation on medium angular scales. Astrophysical Journal, 388(2), 242-252. https://doi.org/10.1086/171148