H I calibration measurements at Arecibo Observatory

Details H I calibration measurements at Arecibo Observatory H I calibration measurements at Arecibo Observatory

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986rasc...21..761c&link_type=abstract

Radio Science (ISSN 0048-6604), vol. 21, July-Aug. 1986, p. 761-768. Research supported by the National Astronomy and Ionosphere

Astronomy and Astrophysics

Astronomy

5

Astronomical Observatories, Calibrating, Galactic Radiation, Hydrogen, Radiation Spectra, Accuracy, Moon, Phased Arrays, Radio Telescopes

Scientific paper

An analysis of Galactic H I spectra acquired over a period of seven months, is used to study the accuracy of H I profiles obtained with the dual circular feed at Arecibo Observatory. The H I stray radiation contribution is estimated from a comparison of H I spectra toward the moon with H I spectra in the same direction when the moon is absent. The profile areas of corrected H I spectra are accurate to 3 percent, while individual features are accurate to 15 percent. At velocities where the H I emission is less than 3 K, the observed stray radiation is less than 0.5 K.

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