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Apparatus complex for optical probing of the Earth's atmosphere by the twilight method

The apparatus complex that permits to make scan photometrically and polarization measurements of day, twilight and night sky brightness as well as stellar radiation for determining optical characteristic of the Earth's atmosphere is developed. Peculiarities of twilight photometrically measurements are discussed. Constructive features of the twilight photometer and measurement control block, their connection with an IBM-type personal computer, details of control program's algorithms and database's structure are described.