AOR   : Astronomical Observation Request
AOT   : Astronomical Observation Template
DTCP  : Daily TeleCommunications Period
ESA   : European Space Agency
FOV   : Field of view
HSpot : Herschel planning observations tool
ICC   : Instrument Control Centre
ICS   : Internal Calibration Source
OD    : Observation Day
PACS  : Photodetector Array Camera & Spectrometer
PSF   : Point Spread Function
PV    : Performance Verification Phase
SPIRE : Spectral and Photometric Imaging Receiver