Absolute calibration of millimeter-wavelength spectral lines

A detailed analysis of the chopper-wheel method of calibrating the intensity of a millimeter-wavelength spectral line is presented. Special techniques were used to construct a receiver which eliminates most of the usual calibration difficulties. The zenith atmospheric extinction between 3.5 mm and 2...

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Veröffentlicht in:	Astrophys. J., Suppl. Ser.; (United States) Suppl. Ser.; (United States), 1976-03, Vol.30, p.247
Hauptverfasser:	Ulich, B. L., Haas, R. W.
Format:	Artikel
Sprache:	eng
Schlagworte:	640105 - Astrophysics & Cosmology- Galaxies ANTENNAS CALIBRATION CHEMICAL COMPOSITION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC RADIO SOURCES ELECTRICAL EQUIPMENT ELECTROMAGNETIC RADIATION INTERSTELLAR SPACE MEASURING INSTRUMENTS MOLECULES RADIATIONS RADIOWAVE RADIATION SPACE SPECTRA SPECTROMETERS
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