The Tübingen Echelle Spectrograph (TUES), designed and
managed at the University of Tübingen, flew on the
Orbiting and Retrievable Far and Extreme Ultraviolet Spectrograph
(ORFEUS)-SPAS II space shuttle mission in 1996, returning spectra in the 900 Å to
1400 Å wavelength range. The instrument was designed to achieve a
spectral resolution of
/=10000 when used with
an entrance aperture of 10" diameter.
During the 17.7 day flight, TUES returned 239 spectra of 62 targets.
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