Solar observations on the RATAN-600 radio telescope - First results

Details Solar observations on the RATAN-600 radio telescope - First results Solar observations on the RATAN-600 radio telescope - First results

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976azh....53.1017p&link_type=abstract

Astronomicheskii Zhurnal, vol. 53, Sept.-Oct. 1976, p. 1017-1026. In Russian.

Astronomy and Astrophysics

Astronomy

2

Antenna Design, Microwave Antennas, Noise Temperature, Radio Telescopes, Solar Radio Emission, Solar Spectra, Antenna Radiation Patterns, Normal Density Functions, Solar Corona, Solar Wind, Sunspots

Scientific paper

Preliminary observations of the sun have been carried out with the new RATAN-600 radio telescope. Tests were performed on part of the northern sector of the antenna, consisting of 225 reflectors forming 90 deg of circular arc. During the summer months the aperture size of the antenna was 408 by 75 m, which at 2 cm wavelength gave a main lobe size of 12 sec of arc by 1.2 min of arc. Wideband transistor amplifiers and low noise temperatures ensured a flux sensitivity of the radiometers for sources on the sun's disk of (1-3) times 10 to the minus 26th W/sq m Hz. Observational techniques are briefly described, and some examples of recordings of flocculi and spots are shown.

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