The 8th Orbiting Solar Observatory (OSO-8) was
launched on 21 June 1975. While OSO-8's primary objective was to observe
the Sun, four instruments were dedicated to observations of other
celestial X-ray sources brighter than a few milliCrab.
OSO-8 ceased operations on 1 October 1978.
Lifetime : 21
June 1975 - 1 October 1978 Energy Range :
0.15 keV - 1 MeV Payload :
GSFC Cosmic X-Ray Spectroscopy Experiment (GCXSE)
Detector A (2-60 keV): Eff. area = 263 cm2, FOV = 5°
Detector B (2-20 keV): Eff. area = 37 cm2, FOV = 3°
Detector C (2-60 keV): Eff. area = 237 cm2, FOV = 5°
High Energy Celestial X-ray Experiment
0.01-1 MeV eff. area 27.5 cm2, FOV 5°