TUES: Tübingen Echelle Spectrograph Observations from ORFEUS/SPAS-2 Mission

The ORFEUS/SPAS-2 mission collected moderate dispersion ultraviolet spectra for 14 days in November/December 1996. The Tübingen Echelle Spectrograph (TUES) instrument, built by the University of Tübingen, observed objects in a 10 arcsec aperture with a resolution of about 10,000. Data covers wavelengths from 910 to 1410 Angstroms, calibrated using interstellar molecular hydrogen lines.

Use Cases

• Analyzing stellar atmospheric composition based on moderate dispersion ultraviolet spectra.
• Studying interstellar medium properties using wavelength calibration from molecular hydrogen lines.
• Modeling instrument performance and aperture efficiency for ultraviolet spectrographs.
• Comparing spectral features across orders 40 to 61 from 910 to 1410 Angstroms.

Strengths

• Instrumental resolution of about 10,000 and moderate dispersion (R=13,000).
• Effective aperture peaks at 1.3 cm2 near 1100 Angstroms.
• Wavelength calibration established via interstellar molecular hydrogen lines.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is stored in BIN format, which may require specialized tools for access.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Tübingen Echelle Spectrograph on the ORFEUS/SPAS-2 satellite mission.

Time Range

November/December 1996

Freshness

Last updated 2026-03-13 19:51:08.456790; freshness should be verified.

Geography

Space-based observations; specific celestial targets not specified.