The HEAO-3 Satellite


photo of HEAO-3 in the clean room
The HEAO-3 satellite carried three high-energy-astrophysics instruments, one instrument surveying the sky in hard X-rays and gamma rays, and two measuring the composition of cosmic rays. The High Resolution Gamma-Ray Spectrometer Experiment built by the Jet Propulsion Laboratory was the largest germanium spectrometer placed in orbit at that time. The cosmic-ray instruments, one built by a Danish-French collaboration and the other built as a collaboration among Washington University in St. Louis, Caltech, and University of Minnesota were the largest cosmic-ray detectors to have flown in space.

Mission Characteristics

* Lifetime: 20 September 1979 - 29 May 1981
* Energy Range: 50 keV - 10 MeV
* Payload:
  • High Resolution Gamma Ray Spectrometer (HRGRS):
    50 keV - 10 MeV, FOV 30°, effective area 75 cm2 at 100 keV (JPL, UCSD)
  • Cosmic Ray Isotope Experiment (DSRI, Saclay)
  • Heavy Nuclei Experiment (CalTech, Washington University in St. Louis, and U. of Minnesota)
* Science Highlights: Sky survey of gamma-ray narrow-line emission.

* Archive: HEASARC hosts the HRGRS raw data in their native format. Other HEAO-3 data sets are at the NSSDC in their native format.


[HEAO-3 Home] [About HEAO-3] [Archive] [Gallery] [Publications]

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Page authors: Lorella Angelini Jesse Allen
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Last modified: Thursday, 24-Sep-2020 19:43:17 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.