Space Telescopes
ProtoEXIST1
A first generation balloon-borne hard X-ray telescope prototype launched in support of the development of a next generation wide field X-ray monitor for astrophysics.
ProtoEXIST2
The second generation which utilized new hardware to significantly improve the energy resolution and angular resolution of the ProtoEXIST1 architecture.
REXIS
The Regolith X-ray Imaging Spectrometer (REXIS) is a CCD based wide-field X-ray telescope for the characterization of the surface properties of asteroids and other airless bodies using low energy X-rays.
Building Probes for Extreme Astrophysical Phenomena and Planetary Science
Disclaimer: May extend beyond the usual parameter space.
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Planetary
Probe the origin and composition of nearby objects which we can visit with interplanetary missions.
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Astrophysics
Probe the nature of extreme astrophysical phenomena including black holes, neutron stars, gamma-ray bursts and supernova.