In-flight performance and calibration of the Infrared Array Camera   (IRAC) for the Spitzer Space Telescope
  The Infrared Array Camera (IRAC) is one of three focal plane instruments on board the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band images at 3.6, 4.5, 5.8, and 8.0 microns in two nearly adjacent fields of view. We summarize here the in-flight scientific, technical, and operational performance of IRAC. 
J. L. Hora and the IRAC team