ACS Attitude Control System
ADU Analog to Digital converter Unit (=1LSB)
AIC Active Image Counter
APL Applied Physics Laboratory
ASC Autonomous Shutdown Counter
ASIC Application-Specific Integrated Circuit
AUX Auxiliary power supply (Detector)
AUXI AUX power supply current
BOS Bright Object Sensor
bps Bits Per Second
CalFUSE FUSE data reduction and calibration pipeline
CCSDS Consultative Committee on Space Data Systems
CCD Charge Coupled Device
C&DH Command and Data Handling
CDC Charge to Digital Converter
CEU Central Electronics Unit
CNES Centre National dÕEtudes Spatiale
COTS Commercial Off the Shelf
CPU Central Processing Unit
CRC Cyclic Redundant Checksum
CSA Canadian Space Agency
CSS Coarse Sun Sensor
CTE Coefficient of Thermal Expansion
CU University of Colorado at Boulder
CVZ Continuous Viewing Zone
DADS Data Archive and Distribution System
DAO Dominion Astrophysical Observatory
DDL Double Delay Line
DEC Digitized Event Counter
DLT Digital Linear Tape
DPU Detector Processing Unit
DQ Delta Quaternion
EEPROM Electronically Erasable Programmable Read-Only Memory
EPV Extended Precision Vector
FARF Flight Alignment Reference Frame
FEC Fast Event Counter
FES Fine Error Sensor
FIFO First In First Out
FITS Flexible Image Transport System
FOV Field of View
FPA Focal Plane Assembly
FPAE FPA Electronics
FPD Fine Pointing Data (packet)
FUV Far Ultraviolet
FUSE Far Ultraviolet Spectroscopic Explorer
FUVS Far UltraViolet Spectrograph
GMA Grating Mount Assemblies
GSFC Goddard Space Flight Center
HIRS High Resolution Aperture
H/K Housekeeping (telemetry)
HOP High Output Paraffin
HTSI Honeywell Technology Solutions Incorporated (formerly Allied Signal)
HV High Voltage
HVIA High Voltage current in detector segment A
HVIB High Voltage current in detector segment B
H/W Hardware
IAP Institut dÕAstrophysique de Paris
ICS Interface and Control Systems, Inc.
IDS Instrument Data System
IOC In-Orbit Checkout
IPCS Instrument Prime Coordinate System
IPSDU Instrument Power Switching and Distribution Unit
IRU Inertial Reference Unit
IT Information Technology
I&T Integration and Test
JHU the Johns Hopkins University
kbps kilobits per second
KSC Kennedy Space Center
LC Lower Core
L&IOC Launch and In-Orbit Checkout
LiF Lithium Flouride
LWRS Low Resolution Aperture
MAE Mirror Assembly Electronics
MAST Multi-mission Archive at Space Telescope
Mbps Megabits Per Second
MCP Micro Channel Plate
MDRS Medium Resolution Aperture
MOT Mission Operations Team
MPA Mirror Positioning Assembly
MPS Mission Planning Schedule
MTB Magnetic Torquer Bar
MTBE Magnetic Torquer Bar Electronics
NASA National Aeronautics and Space Administration
NEA Noise Equivalent Angle
OPUS Operational Pipeline Unified System
OSC Orbital Sciences Corporation
OSI Observation Specific Inertial
PHA Pulse Height Amplitude
PI Principal Investigator
PROM Programmable Read-Only Memory
PSF Point Spread Function
RAM Random Access Memory
RFPT Reference Point Ð position of OSI on FPA
ROM Read Only Memory
RWA Reaction Wheel Assembly
SAA South Atlantic Anomaly
SAD Solar Array Drive
SADE Solar Array Drive Electronics
SAI Swales Aerospace Inc.
SAMA Small Angle Maneuver Activity
SCC Satellite Control Center
SEU Single Event Upset
S/C Spacecraft
SIA Spectral Image Allocation (tables)
SiC Silicon Carbide
SSC Sigma Space Corp.
SSMO Space Science Mission Operations
STScI Space Telescope Science Institute
S/W Software
TAM Three Axis Magnetometer
TDC Time to Digital Converter
TEC Thermo-Electric Cooler
TTAG Time-Tagged - science data storage mode
UC Upper Core or University of California
UCB University of California at Berkeley
UPRM University of Puerto Rico Mayaguez
UTC Universal Time Coordinated
WFF Wallops Flight Facility
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