| ACQ |
Acquisition |
| ACS |
Advanced Camera for Surveys |
| APT |
Astronomer's Proposal Tool |
| BOP |
Bright Object Protection |
| CADC |
Canadian Astronomy Data Centre |
| CCD |
Charge-Coupled Device |
| COS |
Cosmic Origins Spectrograph |
| COSTAR |
Corrective Optics Space Telescope Axial Replacement |
| CTE |
Charge Transfer Efficiency |
| CVZ |
Continuous Viewing Zone |
| DADS |
Data Archive and Distribution System |
| DD |
Director's Discretionary |
| DSS |
Digitized Sky Survey |
| ESA |
European Space Agency |
| ETC |
Exposure Time Calculator |
| FGS |
Fine Guidance Sensor(s) |
| FITS |
Flexible Image Transport System |
| FOC |
Faint Object Camera |
| FOS |
Faint Object Spectrograph |
| FOV |
Field of View |
| FUV |
Far Ultraviolet |
| GHRS |
Goddard High Resolution Spectrograph |
| GO |
General Observer |
| GSC |
Guide Star Catalog |
| GSFC |
Goddard Space Flight Center |
| GTO |
Guaranteed Time Observer |
| HLSP |
High Level Science Products |
| HRC |
High Resolution Channel |
| HSP |
High Speed Photometer |
| HST |
Hubble Space Telescope |
| HTML |
Hyper Text Markup Language |
| IFOV |
Instantaneous Field of View |
| IRAF |
Image Reduction and Analysis Facility |
| LRF |
Linear Ramp Filter |
| MAMA |
Multi-Anode Microchannel Array |
| mas |
milli arcsecond |
| MAST |
Multimission Archive at STScI |
| NASA |
National Aeronautics and Space Administration |
| NED |
NASA/IPAC Extragalactic Database |
| NCS |
NICMOS Cooling System |
| NICMOS |
Near Infrared Camera and Multi-Object Spectrometer |
| NOAO |
National Optical Astronomy Observatories |
| NUV |
Near Ultraviolet |
| OMS |
Observatory Monitoring System |
| OTA |
Optical Telescope Assembly |
| OTFR |
On The Fly Reprocessing |
| PAM |
Pupil Alignment Mechanism |
| PC |
Planetary Camera |
| PCS |
Pointing Control System |
| PDF |
Portable Document Format |
| PI |
Principal Investigator |
| POS |
Position Mode |
| PSF |
Point Spread Function |
| SAA |
South Atlantic Anomaly |
| SAM |
Small Angle Maneuver |
| SBC |
Solar Blind Channel |
| SI |
Scientific Instrument |
| SIMBAD |
Set of Identifications, Measurements and Bibliography for Astronomical Data |
| SM |
Servicing Mission |
| SSM |
Support Systems Module |
| SSR |
Solid State Recorder |
| ST-ECF |
Space Telescope - European Coordinating Facility |
| STIS |
Space Telescope Imaging Spectrograph |
| STOCC |
Space Telescope Operations Control Center |
| STScI |
Space Telescope Science Institute |
| STSDAS |
Space Telescope Science Data Analysis Software |
| TDRSS |
Tracking and Data Relay Satellite System |
| TRANS |
Transfer Mode |
| UV |
Ultraviolet |
| VIK |
Voltage/Temperature Improvement Kit |
| VTT |
Visual Target Tuner |
| WFC |
Wide Field Camera (on WFPC2) or Wide Field Channel (on ACS) |
| WFC3 |
Wide Field Camera 3 |
| WF/PC |
Wide Field and Planetary Camera 1 |
| WFPC2 |
Wide Field and Planetary Camera 2 |
