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Study of the RATAN-600 power beam pattern and antenna effective area based on deep sky survey data

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Abstract

The power beam pattern and antenna effective area of the RATAN-600 radio telescope are analyzed based on source samples observed during the 7.6-cm sky surveys preformed in 1980, 1988, 1990, 1991, 1993, 1994, and 1999. The surveys were made with the Northern sector of the RATAN-600 at the same declination as the COLD experiment (δ ∼ 5°). Experimental power beam patterns derived from the survey data are compared with the computed patterns. The r.m.s. deviation of the experimental data from the corresponding computed values averaged over all years is (0.19 − 0.23) ± 0.02. The vertical pattern of the 1980 survey is offset by about 1t’ with respect to the central horizontal section. The patterns obtained from the data for other years are symmetric within the measurement errors. The mean antenna effective area averaged over all years except 1993 is 803 ± 88 m2. The behavior of both the beam pattern and effective telescope surface areas was stable from 1980 through 1999

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  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia

    E. K. Majorova

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Original Russian Text © E.K. Majorova, 2010, published in Astrofizicheskii Byulleten, 2010, Vol. 65, No. 2, pp. 196–204.

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Majorova, E.K. Study of the RATAN-600 power beam pattern and antenna effective area based on deep sky survey data. Astrophys. Bull. 65, 196–204 (2010). https://doi.org/10.1134/S1990341310020094

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