ASCAAdvanced Satellite for Cosmology and Astrophysics
ADCAnalog to Digital Converter
AEAnalog Electronics
BBXRTBroad Band X-ray Telescope
CCDCharge Coupled Device
CPU Central Processing Unit
CTECharge Transfer Efficiency
DEDigital Electronics
DFE Dark Frame Error
DSPDigital Signal Processor
EOBExtensible Optical Bench
EXOSATEuropean X-ray Observatory Satellite
FITSFlexible Image Transport System
FOVField Of View
FWHMFull Width Half Maximum
GISGas scintillation Imaging Spectrometer
GOFGuest Observer Facility
GSFCNASA Goddard Space Flight Center
GSPCGas Scintillation Proportional Counter
HPDHalf-Power Diameter
HEASARCHigh Energy Astrophysics Science Archive Research Center
IGSPCImaging Gas Scintillation Proportional Counter
ISASInstitute of Space and Astronautical Science
LHEALaboratory of High Energy Astrophysics
MPCMulti-channel Pulse Count
OGIPOffice of Guest Investigator Programs
PCALPosition Calibration
PHPulse Height
PIPulse Invariant (channel)
PIMMSPortable Interactive Multi-Mission Simulator
PSFPoint Spread Function
PVPerformance Verification
QEQuantum Efficiency
RBMRadiation Burst Monitor
RDDResidual Dark Distribution
ROSATRoentgen Satellite
RTDRise Time Discriminator
SAA South Atlantic Anomaly
SISSolid-state Imaging Spectrometer
SPIKEScientific Planning Interactive Knowledge Expert system
XRTX-ray Telescope(s)