Astronomical Observation Request - an individual observation.
Astronomical Observation Request Key - a unique numerical identification of an observation.
Astronomical Observation Template - the IRAC observing mode.
Basic Calibrated Data, the Level 1 data product from each DCE that has been pipeline-processed and is fully calibrated.
Corrected Basic Calibrated Data. This should be the starting point for further scientific analysis in
Unbroken time period when an instrument is powered on. Most instrument IRAC campaigns are
expected to be on the order of one week in length.
Charge Transfer Efficiency.
Data Collection Event, for IRAC a single 256x256 pixel image from a single detector.
Field Effect Transistor.
Flight Operations System.
Focal Plane Assembly, housing one IRAC detector.
Indium Antimonide, the detector material used in the short wavelength channels of IRAC (1 and
In-Orbit Checkout, the two-month long testing period of the telescope following its launch.
IRAS Sky Survey Atlas.
Jet Propulsion Laboratory
Multiple Instrument Chamber.
Period of Autonomous Operation, the interval between ground contacts for uplinking commands
and downlinking data, normally 12-24 hours.
Pointing Control System.
Point Response Function. The PRF is essentially the convolution of a box the size of the image
pixel with the PSF.
Read-Out Integrated Circuit. It is the chip that contains the multiplexer (column and row scanners
and the buses), the unit cell amplifiers, and the output amplifiers. The chip containing the detector
diodes is bonded to it. It is often called simply the “mux."
Smithsonian Astrophysical Observatory, Cambridge, MA.
Spitzer Science Center, Caltech, Pasadena, CA.
Arsenic-doped Silicon, the detector material in the IRAC long-wavelength channels (3 & 4).
Science Verification, a 35-day period after the IOC during which the science instruments and their observational modes were commissioned.
Spitzer Wide Area Infrared Survey.
World Coordinate System.