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HST and FUSE DADS retrievals will be down from Tuesday, September 2 through Wednesday Sept 3 for a DADS/OPUS installation. See list of alternative data sources. During part of this time, the database will also be down and so searches will be down during that time (HLA and GALEX are unaffected by this downtime).
About IMAPS
- Introduction, Description and History of IMAPS-1 - from the paper "High Resolution Spectroscopy in the Far-UV: Observations of the Interstellar Medium by IMAPS on ORFEUS-SPAS by Jenkins,Reale, Zucchino,Sofia (1996,
- Kluwer Academic Publishers).
- Instrument Description
- from above paper
- Preparations for IMAPS-2 - from above paper
Mission
The Interstellar Medium Absorption Profile Spectrograph (IMAPS)
flew on its first Shuttle-launched mission in September 1993, as
part of the ORFEUS-SPAS program sponsored jointly by NASA and the German
Space Agency (DARA). A second shuttle flight (i.e., as part of
the ORFEUS-SPAS II mission), occurred in November 1996, aboard the
shuttle Columbia.
The objective-grating echelle spectrograph was designed to
obtain high resolution spectra
of bright stars in the 950-1150 Å wavelength region;
a region not detectable by HST.
IMAPS is capable of producing spectra with a resolution of R = 240,000
(i.e., corresponding to a doppler shift of ~ 1 km/sec),
making it the highest resolution spectrograph ever flown in space.
The NASA photo above shows the ORFEUS-SPAS II platform prior to being launched from the NASA Space Shuttle COLUMBIA. IMAPS is the long shiny tube seen piggy-backed on the right side of the platform. (Clicking on the image will show an expanded view.) The other 2 instruments on baord ORFUES-SPAS which share a single main telescope, include the Berkeley Extreme Ultraviolet Spectrometer (EUV) provided by the University of California at Berkeley, and the Far-Ultraviolet Echelle Spectrograph (FUV) designed by the University of Tubingen and the Landessternwarte Heidelberg.
The IMAPS Science Team included the following:
- Dr. Edward Jenkins (Princeton University Observatory) -
Principal Investigator
- Dr. Charles Joseph (Rutgers University, Physics and Astronomy) IMAPS-1,
- Dr. Ulysses Sofia (Villanova University, Astronomy and Astrophysics),
- Dr George Sonneborn (NASA/Goddard Space Flight Center, LASP)
- Dr. Charles Joseph (Rutgers University, Physics and Astronomy) IMAPS-1,
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