ADS Astrophysics Data System
AXAF Advanced X-ray Astrophysics Facility
BBXRT Broad Band X-Ray Telescope
CMA Channel Multiplier Array (EXOSAT)
EXOSAT European X-ray Observatory Satellite
FITS Flexible Image Transport System
GIS Gas Imaging Spectrometer
GOF Guest Observer Facility
GRO Gamma Ray Observatory
HEAO High Energy Astrophysics Observatory
HEASARC High Energy Astrophysics Science Archive Research Center
HRI High-Resolution Imager
HUG HEASARC Users Group
IDL Interactive Data Language
IRAF NOAO's Image Reduction and Analysis Facility
IUE International Ultraviolet Explorer
LE Low Energy (EXOSAT)
LHEA Laboratory for High Energy Astrophysics
ME Medium Energy (EXOSAT)
MPC Monitor Proportional Counter
NSSDC National Space Science Data Center
OGIP Office for Guest Investigator Programs
OSO Orbiting Solar Observatory
PSPC Position-Sensitive Proportional Counter
ROSAT Röntgensatellit
SIS Solid-state Imaging Spectrometer
SSS Solid State Spectrometer
XANADU Analysis package containing XSPEC, XRONOS, XIMAGE and QDP
XTE X-ray Timing Explorer
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