During the flight of the orbital station "Salyut", six spectrograms of β Cen (June 18, 1971) and nine spectrograms of α Lyra (June 21, 1971) were obtained in the range of 2000-3800 A. The spectrograms were received with the help of "Orion" observatory installed on the external surface of "Salyut" and remote-controlled by the spaceman from within. The spectrograms were obtained with photographic method on a film with spectral resolution of about 5 A on 2600 A. After completing the program of observations, the cassette containing the film with the pictures taken was delivered to the Earth where the spectrograms were developed. The essential spectrograms for plotting the curve were taken in the laboratory and on the pieces of films not used. After two months' orbiting in outer space the latter was quite fogged (the density of the background blackening was 0.8-0.9). Most of the spectrograms of α Lyra and β Cen obtained were overexposed. The paper carries specimens of microphotometric recordings of normal spectrograms. They indicate a number of absorption lines.
Communications of the Byurakan Astrophysical Observatory
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