urn:nasa:pds:context:instrument:psyche.grs 1.0 1.17.0.0 Product_Context 2022-01-12 1.0 Initial version urn:nasa:pds:context:instrument_host:spacecraft.psyche instrument_to_instrument_host Psyche Gamma Ray Spectrometer (GRS) Spectrometer Gamma Ray -255150 The Gamma Ray Spectrometer will detect, measure, and map Psyche’s elemental composition. The instrument is mounted on a 6-foot (2-meter) boom to distance the sensors from background radiation created by energetic particles interacting with the spacecraft and to provide an unobstructed field of view. The team is based at the Applied Physics Laboratory at Johns Hopkins University.