Beskrivning : Cosmos 45 was the fourth Russian experimental meteorological satellite and the second launched from the Tyuratam site. Although the flight was at first thought to be part of the reconnaissance recoverable payload series, it was later revealed that the satellite carried supplemental experiments to test meteorological sensors and to obtain data in support of the operational weather satellite development program. The instrumentation included (1) a cloudcover photometer to measure the brightness characteristics of clouds in the 0.6- to 0.85-micron band, (2) a scanning IR radiometer to determine the angular, spectral, and latitudinal distribution of terrestrial IR radiation in the 0.8- to 38-mircon band, (3) a UV spectrophotometer to measure the solar UV radiation reflected and scatterd by the earth`s atmosphere, and (4) a colorimeter to measure the radiation characteristics of the night airglow in the 0.25- to 0.60-micron band.

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ZENIT 4-4 · KOSMOS 45 · VOSKHOD