E
Acronyms
2MASS
Two Micron All Sky Survey
ACS
Advanced Camera for Surveys
ALMA
Atacama Large Millimeter Array
AO
adaptive optics
ASCS
Aft Shroud Cooling System
C&DH
command and data handling
CAD
computer-assisted design
CAIB
Columbia Accident Investigation Board
CCD
charge-coupled device
COS
Cosmic Origins Spectrograph
COSTAR
Corrective Optics Space Telescope Axial Replacement
CSCS
Contingency Shuttle Crew Support
DARPA
Defense Advanced Research Projects Agency
DBA
diode box assembly
DIU
data interface unit
DM
de-orbit module
DMU
data management unit
DR
dexterous robot
DSC
DMU to SI C&DH cross-strap
ECU
electronic control unit
EDO
Extended Duration Orbiter
EM
ejection module
ESA
European Space Agency
ESM
Electronic Support Module
ESTR
Engineering Science Tape Recorder
ET
external tank
ETS
Engineering Test Satellite
EVA
extravehicular activity
FGS
fine-guidance sensor
FOC
Faint Object Camera
FOS
Faint Object Spectrograph
FUSE
Far-Ultraviolet Spectrographic Explorer
GA
grapple arm
GALEX
Galaxy Evolution Explorer
GHRS
Goddard High Resolution Spectrograph
GN&C
guidance, navigation, and control
GSFC
Goddard Space Flight Center
HRSDM
Hubble Robotic Servicing and Disposal Mission
HRV
Hubble Rescue Vehicle
HST
Hubble Space Telescope
INTELSAT
International Telecommunications Satellite
IR
infrared
ISS
International Space Station
ITVC
integrated television camera
JDEM
Joint Dark Energy Mission
JPL
Jet Propulsion Laboratory
JSC
Johnson Space Center
JWST
James Webb Space Telescope
KSC
Kennedy Space Center
LED
light-emitting diode
LF
logistics flight
LMSC
Lockheed Missiles and Space Company
MER
Mars Exploratory Rover
MLI
multi-layer insulation
MMOD
micro-meteoroid orbital debris
MSFC
Marshall Space Flight Center
MSS
Magnetic Sensing System
MTBF
mean time before failure
MTTF
mean time to failure
NASA
National Aeronautics and Space Administration
NASDA
National Space Development Agency of Japan
NCC
NICMOS cryocooler
NCS
NICMOS cooling system
NIC
Near-Infrared Camera
NIC3
lowest-resolution mode of NICMOS
NICMOS
Near Infrared Camera and Multi-Object Spectrometer
NOBL
New Outer Blanket Layer
NRC
National Research Council
OBSS
orbiter boom sensor system
OCEK
Optical Control Electronics Enhancement Kit
OTA
Optical Telescope Assembly
OV
orbiter vehicle
PCU
power control unit
PDR
preliminary design review
PRA
probabilistic risk assessment
PRT
power ratchet tool
RCC
reinforced carbon-carbon
RFI
radio frequency interference
RM
robotic module
RMS
remote manipulator system
RSU
rate sensor unit
RTF
return to flight
RWA
reaction wheel assembly
SA
solar array
SADE
solar array drive electronics
SI
scientific instrument
SM
servicing mission
SMM
Solar Maximum Mission
SNAP
Super Nova Acceleration Probe
SOC
state of charge
SPATEL
space telescope reliability model
SPDM
special purpose dexterous manipulator system
SRMS
shuttle remote manipulator system
SSAT
S-band single-axis transmitter
SSR
solid-state recorder
STIS
Space Telescope Imaging Spectrograph
STS
Space Transportation System
STScI
Space Telescope Science Institute
SYNCOM
geosynchronous communications satellite
TID
total ionizing dose
TPS
thermal protection system
TRL
technical readiness level
ULF
utilization and logistics flight
USAF
U.S. Air Force
UV
ultraviolet
UVis
ultraviolet-visible
VIK
voltage improvement kit
VLT
Very Large Telescope (of the European Southern Observatory)
WESTAR
communications satellite originally built by Western Union
WFC3
Wide-field Camera 3
WFPC
Wide Field Planetary Camera
XSS-11
experimental satellite system (for USAF)