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The HEAO-3 Satellite
he HEAO-3 satellite, like HEAO-1, was a survey
mission operating in the hard X-ray and gamma-ray band. 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 cryogen
for the Ge detectors was exhausted on day 154 of 1980, effectively ending the
mission.
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
- Heavy Nuclei Experiment
- Cosmic Ray Isotope Experiment
Science Highlights:
Sky survey of gamma-ray narrow-line emission.
Archive: HEASARC holds the HRGRS data in their native format.
Other HEAO-3 data sets are at the NSSDC (http://nssdc.gsfc.nasa.gov) in their native format.
[About HEAO-3] (http://heasarc.gsfc.nasa.gov/docs/heao3/heao3_about.html)
[Archive] (http://heasarc.gsfc.nasa.gov/docs/heao3/archive/heao3_archive.html)
[Gallery] (http://heasarc.gsfc.nasa.gov/docs/heao3/heao3_images.html)
[Publications] (http://heasarc.gsfc.nasa.gov/docs/heao3/bib/heao3_biblio.html)
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