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.
Planetary
Probe the origin and composition of nearby objects which we can visit with interplanetary missions.
Astrophysics
Probe the nature of extreme astrophysical phenomena including black holes, neutron stars, gamma-ray bursts and supernova.