Physics
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997r%26qe...40..623l&link_type=abstract
Radiophysics and Quantum Electronics, Volume 40, Issue 8, pp.623-628
Physics
Scientific paper
A new method for improving the sensitivity of linear solar interferometers by averaging the received information in the device operation band has been proposed and realized. It allows us to observe weak-contrast sources on the Sun and perform absolute calibration of the Siberian Solar Radiotelescope (SSRT) using known radio sources. As a result of such calibration, we determine the radiotelescope sensitivity and the absolute location of the directivity pattern (DP). Initially, this observation method was used in March and September 1994 with the Moon and 3C273 quasar as standard sources. As is evident from observations of these sources, a sensitivity of 14 Ja can be achieved. During initial observations, the East-West (E-W) interferometer pattern departed from the calculated direction by 17″ or less, while for the North-South (N-S) interferometer a phase incursion was observed which resulted in pattern deviation from the calculated direction by 60 180″ depending on the observation time.
Lesovoy S. L.
Lubyshev B. I.
Treskov T. A.
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