Acronym |
Definition |
AAVSO |
American Association of Variable Stars Observers |
AE |
Analog Electronics |
AO |
Announcement of Opportunity |
AGN |
Active Galactic Nuclei |
ARF |
Ancillary Response File |
ARK |
Astrophysics Research Knowledgebase |
ASCA |
Advanced Satellite for Cosmology and Astrophysics |
ASM |
All-Sky Monitor (on RXTE) |
BGD |
Background |
BGO |
Bismuth Germanate |
BI |
Back-Illuminated |
CALDB |
Calibration Database |
CCD |
Charge-Coupled Device |
CI |
Charge Ingestion |
Co-I |
Co-investigator |
CPU |
Central Processing Unit |
CTE |
Charge Transfer Efficiency |
CTI |
Charge Transfer Inefficiency |
CXB |
Cosmic X-ray Background |
DDT |
Director Discretionary Time |
DE |
Digital Electronics |
Dec |
Declination |
DP |
Data Processor |
DSN |
Deep Space Network |
EA |
Effective Area |
EEF |
Encircled Energy Function |
EOB |
Extensible Optical Bench |
EPIC |
European Photon Imaging Camera (on XMM-Newton) |
ESA |
European Space Agency |
FI |
Front-Illuminated |
FWHM |
Full-Width Half-Maximum |
FITS |
Flexible Image Transport System |
FOV |
Field Of View |
FSA |
Frame Store Area |
Acronym |
Definition |
FTOOLS |
FITS Tools |
GO |
Guest Observer |
GOF |
Guest Observer Facility |
GRB |
Gamma-Ray Burst |
GSFC |
Goddard Space Flight Center |
GSO |
Gadolinium Silicate |
HEASARC |
High Energy Astrophysics Science Archive Research Center |
HESS |
High Energy Stereoscopic System |
HETG |
High Energy Transmission Grating (on Chandra) |
HEXTE |
High Energy X-ray Timing Experiment (on RXTE) |
HPD |
Half-Power Diameter |
HRI |
High Resolution Imager (on ROSAT) |
HV |
High Voltage |
HXD |
Hard X-Ray Detector |
ISAS |
Institute of Space and Astronautical Science |
INTEGRAL |
INTErnational Gamma-Ray Astrophysics Laboratory |
JAXA |
Japan Aerospace Exploration Agency |
LETG |
Low Energy Transmission Grating (on Chandra) |
LSI |
Large Scale Integration |
MIT |
Massachusetts Institute of Technology |
MPU |
Main Processing Unit |
NRA |
NASA Research Announcement |
NASA |
National Aeronautics and Space Administration |
NOI |
Notice Of Intent |
NSPIRES |
NASA Solicitation and Proposal Integrated Review and Evaluation System |
NXB |
Non-X-ray Background |
OBF |
Optical Blocking Filter |
PDS |
Phoswich Detector System (on Bepppo-SAX) |
PH |
Pulse Height |
PIN |
Positive Intrinsic Negative |
PI |
Principal Investigator |
PI |
Pulse Invariant |
PIMMS |
Portable Interactive Multi-Mission Simulator |
PM |
Photo-Multiplier |
PPU |
Pixel Processing Unit |
PSF |
Point Spread Function |
PSPC |
Position-Sensitive Proportional Counter (on ROSAT) |
P-Sum |
Parallel-Sum |
QDE |
Quantum Detection Efficiency |
RA |
Right Ascension |
RAM |
Random Access Memory |
RGS |
Reflection Grating Spectrometer (on XMM-Newton) |
RFA |
Research Focus Area |
RMF |
Redistribution Matrix File |
ROSAT |
RÖntgen SATellite |
RPS |
Remote Proposal Submission |
RXTE |
Rossi X-ray Timing Explorer |
SAA |
South Atlantic Anomaly |