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Spas 3

Also called Orfeus (Orbiting and Retrievable Far and Extreme UV Spectrometer)


Designation 22798 / 93058C
Launch date 12 Sep 1993
Country of origin Germany
Mission Scientific: Astronomy
Operator DARA
Perigee/Apogee 301/331 km
Inclination 28.5°
Period 90.9 min
Launch vehicle STS 51

The main instrument is the 1-meter Orfeus telescope with EUV (400-1150A) and far UV (900-1250A) spectrometers with high spectral resolution. A secondary experiment is the Princeton Interstellar Medium Absorption Profile Spectrograph which studied very fine structure in ultraviolet absorption lines caused by interstellar gas in stellar spectra.

End of life

Cause Retrieved by the Shuttle
Decay 22 Sep 1993

External resources

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Technical data


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