Abstract
This paper summarizes the activities within the Low-Energy Gamma-Ray Group of the Laboratory for High-Energy Astrophysics at the Goddard Space Flight Center that are specifically related to the development of instrumentation for gamma-ray astronomy. Three programs are described: 1) the Gamma-Ray Imaging Spectrometer (GRIS), a balloon-borne array of seven germanium detectors for high-resolution spectrographic studies of persistent gamma-ray sources, 2) the Transient Gamma-Ray Spectrometer (TGRS), a single radiatively-cooled germanium detector for the spectrographic study of gamma-ray bursts, and 3) the Rapidly Moving Telescope (RMT), a ground-based optical telescope for the detection and study of short-lived optical transients, particularly those that occur in coincidence with gamma-ray bursts.
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