Burst And Transient Source Experiment

Project Description
BATSE was a high energy astrophysics experiment in orbit around Earth on NASA's Compton Gamma-Ray Observatory. The primary objective of BATSE was to study the phenomenon of gamma-ray bursts , although the detectors also recorded data from pulsars , terrestrial gamma-ray flashes , soft gamma repeaters, black holes, and other exotic astrophysical objects.
BATSE responded to, or triggered on, sudden changes in count rates above background levels. It was also capable of detecting less impulsive sources by measuring their modulation using the Earth Occultation technique. View a typical one-day orbit of the Compton Gamma-Ray Observatory.

This information is provided by http://www.batse.msfc.nasa.gov/batse/