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The HEASARC is running nominally. If you are trying to download a lot of data, please consider using the AWS cloud copy of most HEASARC data. As an alternative to locally installing HEASoft, SciServer is an online platform which has the software installed and data available when you login.

NOTICE:

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.

Glossary 

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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