2MASS - 2 Micron All-Sky Survey
AAS - Altitude Anomally Sensors
ACA - Altitude Control Axis
ACC - Attitude Control Computer
ACMS - Attitude Control and Measurement System
AGN - Active Galactic Nucleus
AME - Absolute Measurement Error
AOR - Astronomical Observation Request
AOT - Astronomical Observing Template
APE - Absolute Pointing Error
CP - Calibration Pointing
CFIRB - Cosmic Far Infrared Background
CRS - Coarse Rate Sensors
CUS - Common Uplink System
CVV - Cryostat Vacuum Vessel
DTCP - Daily Telecommunications Period
DSS - Deep Sky Survey
EPLM - Extended Payload Module
ESA - European Space Agency
ESAC - European Space Astronomy Centre
ESD - Electrostatic Discharge
ESOC - European Space Operations Centre
FIRSB - Far Infra Red Sky Background
FIRST - Far Infra Red Space Telescope
FoV - Field of View
FIR - Far Infra Red
FPU - Focal Plane Unit
FWHM - Full Width Half Maximum
GO - Geostationary Orbit
GYR - Gyroscope
HCNE - Herschel Confusion Noise Estimator
HIFI - Heterodyne Instrument for the Far Infrared
HOB - Herschel Optical Bench
HOTAC - Herschel Observing Time Allocation Committee
HSC - Herschel Science Centre
HIPE - Herschel Interactive Processing Environment
HST - Hubble Space Telescope
IA - Interactive Analysis
ICC - Instrument Control Centre
ID - Identification
IPAC - Infrared Processing and Analysis Center
IRAS - Infrared Astronomical Satellite
ISM - Interstellar Medium
ISO - Infrared Space Observatory
LEO - Low Earth Orbit
LEOP - Low Earth Orbit Phase
MOC - Mission Operations Centre
MIR - Mid InfraRed
MLI - Multi-Layer Insulation
NAIF - Navigation Ancillary Information Facility
NASA - National Aeronautics and Space Administration
NED - NASA Extragalactic Database
NHSC - NASA Herschel Sciencce Centre
OD - Operational Day
PACS - Photodetector Array Camera and Spectrometer
PDE - Pointing Drift Error
PDF - Portable Document Format
PLM - Payload Module
PSF - Point-source Spread Function
PV - Performance Verification
QCP - Quality Control Pipeline
RCS - Reaction Control System
RF - Radio Frequency
RPE - Relative Pointing Error
RWA - Reaction Wheel Assembly
S/C - Spacecraft
SAS - Sun Aquisition Sensors
SCUBA - Sub-millimetre Common-User Bolometer Array
SED - Spectral Energy Distribution
SPG - Software Product Generation
SPIRE - Spectral and Photometric Imaging REceiver
SREM - Standard Radiation Environment Monitor
SRPE - Spatial Relative Pointing Error
SSO - Solar System Object
SSR - Solid State Recorders
STR - Star Trackers
SVM - Service Module
TBD - To Be Determined
WFE - WaveFront Error