Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1619u&link_type=abstract
Astronomical Journal, vol. 86, Nov. 1981, p. 1619-1626.
Astronomy and Astrophysics
Astronomy
190
Brightness Temperature, Millimeter Waves, Radiant Flux Density, Radio Astronomy, Radio Sources (Astronomy), Asteroids, Calibrating, H Ii Regions, Moon, Natural Satellites, Planetary Nebulae, Planets, Quasars, Reflecting Telescopes, Sun
Scientific paper
Analyses of data obtained by high-precision observations at 9.55, 3.33 and 2.0 nm of 18 radio sources, including the sun, the moon, the planets, planetary satellites, asteroids, H II regions, planetary nebulae, and a quasar, provide accurate flux densities for the interpretation of source spectra and the calibration of other astronomical observations. A tabulation of absolute flux densities is presented, and the observational techniques employed are described as consisting of dual-beam observations with an 11-m paraboloid telescope, low-noise beamswitching with a nutating subreflector, and absolute and relative thermal calibrations.
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