The oriented Scintillation Spectrometer Experiment: Instrument description

W. N. Johnson*, R. L. Kinzer, J. D. Kurfess, M. S. Strickman, W. R. Purcell, D. A. Grabelsky, M. P. Ulmer, D. A. Hillis, G. V. Jung, R. A. Cameron

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

153 Scopus citations


The Oriented Scintillation Spectrometer Experiment (OSSE) on the Arthur Holly Compton Gamma Ray Observatory satellite uses four actively shielded NaI (Tl) -CsI (Na) phoswich detectors to provide gamma-ray line and continuum detection capability in the 0.05-10 MeV energy range. The instrument includes secondary capabilities for gamma-ray and neutron detection between 10 and 250 MeV. The detectors have 3°.8 × 11°.4 (FWHM) fields of view defined by tungsten collimators. Each detector has an independent, single-axis orientation system which permits offset pointing from the spacecraft Z-axis for background measurements and multitarget observations. The instrument, and its calibration and performance, are described.

Original languageEnglish (US)
Pages (from-to)693-712
Number of pages20
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - 1993


  • Artificial satellites, space probes
  • Gamma rays: Observations
  • Instrumentation: Detectors
  • Instrumentation: Spectrographs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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