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A large-beam sky survey at millimeter and submillimeter wavelengths made from balloon altitudes
Owens, D. K.; Muehlner, D. J.; Weiss, R.
AA(Princeton University, Princeton, N.J.), AB(MIT, Cambridge, Mass.), AC(MIT, Cambridge, Mass.)
Astrophysical Journal, Part 1, vol. 231, Aug. 1, 1979, p. 702-710. (ApJ Homepage)
Publication Date:
Space Radiation
NASA/STI Keywords:
Balloon-Borne Instruments, Far Infrared Radiation, Galactic Structure, Interstellar Matter, Milky Way Galaxy, Sky Surveys (Astronomy), Angular Distribution, Background Radiation, Cosmic Rays, Data Processing, Emission Spectra, Galactic Nuclei, Millimeter Waves, Spatial Distribution, Submillimeter Waves, Tables (Data)
Bibliographic Code:


A survey has been made of a quarter of the celestial sphere from balloon altitudes with a telescope having a 1.6-deg beamwidth and two spectral bands: 3-10 kaysers and 10-25 kaysers. The limiting sensitivity of the survey was 10,000 Jy. The galactic disk was detected from 358 to 45 deg galactic longitude. The total far-infrared flux from several regions on the galactic plane measured in this survey is 5-10 times larger than that observed by others using smaller beamwidths and small-amplitude spatial chopping, indicating that a substantial part of the emission comes from extended sources. Two other extended sources were also observed, one in the Cygnus region and the other a spur running off the galactic plane at 130 deg galactic longitude toward the north celestial pole. In addition, lower limits for the spectral index of interstellar dust emission are presented.

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