aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 128 HZKBKR Research articles Technique for processing the RATAN-600 sky survey at the declination of the Crab Nebula Bursov Nikolaj Kudryashova Anastasya Special Astrophysical Observatory, Nizhnij Arkhyz 369167, Zelenchukskiy region, Karachai-Cherkessian Republic, Russian Federation Special Astrophysical Observatory, Nizhnij Arkhyz 369167, Zelenchukskiy region, Karachai-Cherkessian Republic, Russian Federation 29 09 2026 7 3 1 4 23 09 2026 Copyright (c) 2026 Nikolaj Bursov, Anastasya Kudryashova 2026 Nikolaj Bursov, Anastasya Kudryashova The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

In this paper we present the results of developing a method for processing the sky survey obtained with the fixed antenna of the RATAN-600 Western Sector ($Az =270^\circ$) at the declination of the pulsar in the Crab Nebula. The sky survey was conducted in 2018-2019 using a complex of three four-channel radiometers at a central frequency of 4.7 GHz. We consider the peculiarities of the passage of sources at a parallactic angle through the antenna beam pattern, with input horns of radiometers located along the focal line of the secondary mirror. A sample of 205 sources with $S/N > 50$ ($S_{4.7}  > 15$ mJy) was processed. For the detected and identified sources, we calculated ephemerides for the observational epoch, depending on their offset relative to the telescope beam pattern centers in each receiving horn of the radiometers. During data accumulation, the measured positions of the sources were corrected, and a change in the gain of the radiometers due to ambient temperature was taken into account. The proposed method allows one to determine both the position of the detected sources with an accuracy of 1-2 seconds and flux densities with an accuracy of 5-10%.

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