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RATAN-600 Beam Pattern and Drift Scans of Radio Sources in the Radio Telescope Operation Mode with the West Sector
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RATAN-600 Beam Pattern and Drift Scans of Radio Sources in the Radio Telescope Operation Mode with the West Sector
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Journal Article
RATAN-600 Beam Pattern and Drift Scans of Radio Sources in the Radio Telescope Operation Mode with the West Sector
2023
Overview
The paper presents results of calculating the RATAN-600 beam pattern (BP) and BP drift scans of point radio sources in the West Sector radio telescope operation mode at a frequency of 4.7 GHz. When calculating the BP, the properties of the radio telescope antenna system in this operation mode were taken into account: the use of a large secondary mirror, asymmetric radiation of the primary mirror, and the location of the primary feeds (feed horns) along the focal line of the secondary mirror. The shape of the calculated drift scans of sources through the BP is compared with that of the experimental drift scans of sources obtained from observations in the West Sector. The main characteristics of the drift scans are calculated and compared when the radio telescope operates with the West and North Sectors. A new method for determination of flux densities of sources passing through the BP outside its central cross-section is proposed, and its accuracy is estimated.
Publisher
Pleiades Publishing,Springer Nature B.V
