Computer Science – Performance
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..770m&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 106, no. 701, p. 770-779
Computer Science
Performance
13
Background Radiation, Near Infrared Radiation, Rocket-Borne Instruments, Sky Brightness, Big Bang Cosmology, Continuous Spectra, Cosmic Background Explorer Satellite, Infrared Spectrometers, Japanese Spacecraft, Time Dependence
Scientific paper
In a search for extragalactic background radiation, we measured the absolute sky brightness at high galactic latitude at near-infrared wavelengths (1.4-4 micrometers) using a liquid-helium-cooled spectrometer flown on board the Japanese rocket S-520-15. For the purpose of estimating statistical and systematic uncertainties for future experiments, the instrumentation, the calibration, and the performance are described in detail. The observations clearly show time-dependent components of terrestrial and environmental origin. The observed residual brightness was slightly brighter than that of previous rocket-borne experiments and the recent result of Cosmic Background Explorer (COBE)/Diffuse Infrared Background Experiment (DIRBE). We set upper limits on the extragalactic continuum intensity of lambda x Ilambda less than 2.0 x 10-11 w/sq cm/sr at 2.5 micrometers and less than 2.5 x 10-11 w/sq cm/sr at 4.0 micrometers and on the extragalactic line intensity of I less than 5 x 10-13 w/sq cm/sr at 1.7-2.5 micrometers.
Bock James Joseph
Kawada Mitsunobu
Matsuhara Hideo
Matsumoto Toshio
Matsuura Shuji
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