Map of Observations
The Berkeley Extreme and Far-UV Spectrometer (BEFS) flew on the Orbiting and Retrievable Far and Extreme Ultraviolet Spectrograph (ORFEUS)-SPAS I and II space shuttle missions in 1993 and 1996, returning high-resolution (λ/Δλ) FUV spectra (900-1200 Å) of 75 astrophysical objects from the first flight and more than 100 from the second. EUV spectra (400-900 Å) were obtained for a subset of these targets.
Flight 1: September 12 - September 26, 1993
Flight 2: November 19 - December 7, 1996
R ~ 3,000
Search multiple missions using target names or coordinates.
BEFS Search Form
BEFS Classic web form
Table of BEFS Observations
Featured Data Products
Extracted Spectral Files: Extracted, flux-calibrated spectrum.
Time-tagged Photon Lists: Photon event list containing arrival times and detector positions.