This Legacy journal article was published in Volume 5, November 1994, and has not been updated since publication. Please use the search facility above to find regularly-updated information about this topic elsewhere on the HEASARC site.


ADF	   Astrophysics Data Facility
ADS	   Astrophysics Data System
Astro-D	   Fourth Japanese X-ray Satellite (before launch)
ASCA	   Advanced Satellite for Cosmology and Astrophysics (formerly Astro-D)
AXAF	   Advanced X-ray Astrophysics Facility
BBXRT	   Broad Band X-Ray Telescope
CGRO	   Compton Gamma Ray Observatory (or Compton Observatory)
CMA	   Channel Multiplier Array (EXOSAT)
COSSC	   Compton Observatory Science Support Center
EUVE	   Extreme Ultraviolet Explorer
EXOSAT	   European X-ray Observatory Satellite
FITS	   Flexible Image Transport System
FOV	   Field of view
FPCS	   Flat Plane Crystal Spectrometer (Einstein)
GIS	   Gas Imaging Spectrometer
GOF	   Guest Observer Facility
GRASP	   Generic Retrieval/Archive Services Protocol
GSFC	   Goddard Space Flight Center
HEAO	   High Energy Astrophysics Observatory
HEASARC	   High Energy Astrophysics Science Archive Research Center
HED	   High Energy Detector (HEAO-1)
HRI	   High-Resolution Imager (Einstein and ROSAT)
HUG	   HEASARC Users Group
IDL	   Interactive Data Language
IRAF	   NOAO's Image Reduction and Analysis Facility
IUE	   International Ultraviolet Explorer
LE	   Low Energy (EXOSAT)
LED	   Low Energy Detector (HEAO-1)
LHEA	   Laboratory for High Energy Astrophysics
ME	   Medium Energy (EXOSAT)
MED	   Medium Energy Detector (HEAO-1)
MPC	   Monitor Proportional Counter
NSSDC	   National Space Science Data Center
OGIP	   Office for Guest Investigator Programs
OGS	   Objective Grating Spectrometer (Einstein)
OSO	   Orbiting Solar Observatory
PIMMS	   Portable Interactive Multi-Mission Software
PSPC	   Position-Sensitive Proportional Counter (Einstein and ROSAT)
ROSAT	   Röntgensatellit
SAA	   South Atlantic Anomaly
SIS	   Solid-state Imaging Spectrometer
SSS	   Solid State Spectrometer (Einstein)
XANADU	   Analysis system containing XSPEC, XRONOS, XIMAGE and QDP
XSPEC 	   Spectral fitting package (part of XANADU)
XTE	   X-ray Timing Explorer

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