Orbiting solar telescope on 'Salyut-4' station

Details Orbiting solar telescope on 'Salyut-4' station Orbiting solar telescope on 'Salyut-4' station

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977acaau...4.1121b&link_type=abstract

Acta Astronautica, vol. 4, Nov.-Dec. 1977, p. 1121-1125.

Astronomy and Astrophysics

Astronomy

Salyut Space Station, Solar Instruments, Spaceborne Telescopes, Spectroscopic Telescopes, Far Ultraviolet Radiation, Metal Coatings, Mirrors, Photoelectric Cells, Solar Sensors, Solar Spectra

Scientific paper

The orbiting solar telescope on Salyut-4 (F = 2.5 m, d = 250 mm) produces images of the sun on the entrance slit of a stigmatic two-grating spectrograph (R1 = 1 m, N1 = 1200 lines/mm; R2 = 0.5 m, N2 = 2400 lines/mm, dispersion 16 A/mm, spectral resolution 0.3 A). The automatic system keeps the observed solar features on the slit of the spectrograph with an accuracy of 3-4 arc sec. The far UV-spectra (970-1400 A) of solar flares, brightenings, flocculi and prominences were photographed and fresh coatings of mirrors were made during the flight.

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