NSSDCA ID: 1993-058C-01
Mission Name: ORFEUS-SPAS IThe Tubingen Ultraviolet Echelle Spectrometer (TUES) was also known as the Far Ultraviolet (FUV) Spectrometer. TUES operated in the 90 - 125 nm range with a resolving power of R = 10,000.
Light coming into the ORFEUS 1-m telescope was deflected into TUES by a movable mirror. When the mirror was moved out of the beam, light fell onto a second spectrometer - the Berkeley Extreme and Far-UV Spectrometer (BEFS). TUES consisted of an Echelle blazed grating of 316 lines per millimeter, a cross disperser grating of 1200 lines per millimeter, and a high-sensitive photon counting and imaging detector with a sensitive area of 40mm x 40mm.
TUES failed to record scientifically usable data during the ORFEUS-SPAS I mission. During the second flight on ORFEUS-SPAS II, TUES returned about 239 spectra of 62 targets.
Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Michael Grewing | Principal Investigator | Universitat Tubingen |