| Soyuz 7K-MF6 | |
| Size: | 190px |
| Manufacturer: | Experimental Design Bureau (OKB-1) |
| Country: | Soviet Union |
| Applications: | Crewed spacecraft as Earth Observatory Station |
| Orbits: | Low Earth orbit |
| Operator: | Soviet space program |
| Lifetime: | Up to 35 days, used for 8 days |
| Insignia: | Vimpel 'Diamond'.jpg |
| Insignia Caption: | Vimpel Diamond for entrainment patch |
| Derivedfrom: | Soyuz 7K-TM Soyuz 7K-T |
| Status: | Out of service |
| Built: | 1 |
| Launched: | 1 |
| Power: | Solar arrays output 1.3 kW from on 4-segments |
| Equipment: | MF6 multispectral camera |
| Dimensions: |
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Soyuz 7K-MF6 is a version of the Soyuz spacecraft and was the second Soviet spacecraft designed for space station flight, a dedicated science mission. Its only crewed flight was conducted in 1976 with Soyuz 22 of the Soyuz programme.
See main article: Soyuz 22 and MKF-6 (multispectral camera).
The one craft of the Soyuz 7K-MF6 was modified from the original Soyuz 7K-TM/Soyuz 7K-T with the addition of observatory platform. The Soyuz 7K-MF6 flew once on Soyuz 22. Soyuz 7K-MF6 propulsion was from a KTDU-80, liquid rocket engine. Soyuz 7K-MF6 was the second Soviet manned space observatory, the first was Soyuz 13/Soyuz 7K-T-AF. Soyuz 7K-MF6/Soyuz 2 housed the MKF-6 multi-spectral camera. The spectral camera was used for photography of Earth. The multi-spectral camera was manufactured by Carl Zeiss-Jena in East Germany. The universal docking port was removed and a multispectral camera was installed in its place. The observatory equipment was added to the top of nose cone of the spacecraft. Soyuz 7K-MF6 started as the back up spacecraft for the Apollo–Soyuz project, a Soyuz ASTP craft # 74. The Soyuz ASTP was modified in 1976 to become 7K-MF6, after it was not need for the Apollo–Soyuz project that ended in 1975, which used spacecraft Soyuz 19 and Apollo CSM-111.