Editing Compton Gamma Ray Observatory (section)

===BATSE===
The '''Burst and Transient Source Experiment''' ('''BATSE''') by NASA's [[Marshall Space Flight Center]] searched the sky for [[gamma-ray burst]]s (20 to >600 keV) and conducted full-sky surveys for long-lived sources. It consisted of eight identical detector modules, one at each of the satellite's corners.<ref name=nasa-cgro-nra-g>[https://heasarc.gsfc.nasa.gov/docs/cgro/nra/appendix_g.html#V. BATSE GUEST INVESTIGATOR PROGRAM]</ref> Each module consisted of both a [[Gamma spectroscopy#Scintillation detectors|NaI(Tl)]] Large Area Detector (LAD) covering the 20 keV to ~2 MeV range, 50.48&nbsp;cm in dia by 1.27&nbsp;cm thick, and a 12.7&nbsp;cm dia by 7.62&nbsp;cm thick NaI Spectroscopy Detector, which extended the upper energy range to 8 MeV, all surrounded by a plastic scintillator in active anti-coincidence to veto the large background rates due to cosmic rays and trapped radiation. Sudden increases in the LAD rates triggered a high-speed data storage mode, the details of the burst being read out to [[telemetry]] later. Bursts were typically detected at rates of roughly one per day over the 9-year CGRO mission. A strong burst could result in the observation of many thousands of gamma-rays within a time interval ranging from ~0.1 s up to about 100 s.