Absolute Calibration of the Infrared Array Camera on the Spitzer Space Telescope

  title={Absolute Calibration of the Infrared Array Camera on the Spitzer Space Telescope},
  author={William T. Reach and S. Thomas Megeath and Martin G. Cohen and Joseph L. Hora and Sean J. Carey and Jason A. Surace and Steven P. Willner and Pauline Barmby and Gillian Wilson and William Joseph Glaccum and Patrick J. Lowrance and Massimo Marengo and Giovanni G. Fazio},
  journal={Publications of the Astronomical Society of the Pacific},
  pages={978 - 990}
The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry of a set of A stars near the north ecliptic pole to predictions based on ground‐based observations and a stellar atmosphere model. The brightness of point sources is calibrated to an accuracy of 3%, relative to models for A‐star stellar atmospheres, for observations performed and analyzed in the same manner as for the calibration stars. This includes corrections for the location of… 


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