• Vladimir Kovalyonok - Commander
• Yuri Ponomaryov - Flight Engineer

[

Mission parameters

• Mass: 6560 kg
• Perigee: 188 km
• Apogee: 247 km
• Inclination: 51.6°
• Period: 88.8 min

[

Orion 2 Space Observatory

The Orion 2 Space Observatory also designed by Grigor Gurzadyan was operated by crew member Valentin Lebedev. Ultraviolet spectrograms of thousands of stars to as faint as 13th magnitude were obtained by a wide-angle meniscus telescope of the Cassegrain system, with an aperture diameter of 240 mm, an equivalent focal length of 1,000 mm, and a 4-grade quartz prism objective. The dispersion of the spectrograph was 17, 28 and 55 nm/mm, at wavelengths of 200, 250 and 300 nm respectively. The first satellite UV spectrogram of a planetary nebula (IC 2149 in Auriga) was obtained, revealing lines of aluminium and titanium - elements not previously observed in objects of that type. Two-photon emission in that planetary nebula and a remarkable star cluster in Auriga were also discovered.

Once again, the new Soyuz variant performed extremely well when on-board systems were tested.

The landing was in a snow storm.

[

References

• G.A.Gurzadyan, Ultraviolet spectra of Capella, Nature, vol. 250, p.204, 1974 [1]
• G.A.Gurzadyan, S.S.Rustambekova, Silicon-rich stellar envelope? Nature, vol. 254, p.311, 1975 [2]
• G.A.Gurzadyan, A.L.Jarakyan, M.N.Krmoyan, A.L.Kashin, G.M.Loretsyan, J.B.Ohanesyan, Space astrophysical observatory Orion-2, Astrophysics and Space Science, vol.40, p.393, 1976 [3]
• G.A.Gurzadyan, Two-photon emission in planetary nebula IC 2149, Astronomical Society of the Pacific Publications, vol.88, p.891, 1976[4]
• H.A.Abt, Spectral types in Gurzadyan's clustering in Auriga, Astronomical Society of the Pacific Publications, vol.90, p.555, 1978 [5]

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