Skip to main content
Article
The Infrared Spectrograph* (IRS) on the Spitzer Space Telescope
The Astrophysical Journal (2004)
  • J. R. Houck, Cornell University
  • T. L. Roellig, NASA Ames Research Center
  • J. van Cleve, Ball Aerospace and Technologies Corporation
  • W. J. Forrest, University of Rochester
  • T. L. Herter, Cornell University
  • C. R. Lawrence, California Institute of Technology
  • K. Matthews, California Institute of Technology
  • H. J. Reitsema, Ball Aerospace and Technologies Corporation
  • B. T. Soifer, California Institute of Technology
  • D. M. Watson, University of Rochester
  • D. Weedman, Cornell University
  • M. Huisjen, Ball Aerospace and Technologies Corporation
  • J. Troeltzsch, Ball Aerospace and Technologies Corporation
  • D. J. Barry, Cornell University
  • J. Bernard-Salas, Cornell University
  • C. E. Blacken, Cornell University
  • B. R. Brandl, Leiden University
  • V. Charmandaris, Cornell University
  • D. Devost, Cornell University
  • G. E. Gull, Cornell University
  • P. Hall, Cornell University
  • C. P. Henderson, Cornell University
  • Sarah J.U. Higdon, Cornell University
  • B. E. Pirger, Cornell University
  • J. Schoenwald, Cornell University
  • G. C. Sloan, Cornell University
  • K. I. Uchida, Cornell University
  • P. N. Appleton, California Institute of Technology
  • L. Armus, California Institute of Technology
  • M. J. Burgdorf, California Institute of Technology
  • S. B. Fajardo-Acosta, California Institute of Technology
  • C. J. Grillmair, California Institute of Technology
  • J. G. Ingalls, California Institute of Technology
  • P. W. Morris, California Institute of Technology
  • H. I. Teplitz, California Institute of Technology
Abstract
The Infrared Spectrograph (IRS) is one of three science instruments on the Spitzer Space Telescope. The IRS comprises four separate spectrograph modules covering the wavelength range from 5.3 to 38 m with spectral resolutions, R ¼ k=k  90 and 600, and it was optimized to take full advantage of the very low background in the space environment. The IRS is performing at or better than the prelaunch predictions. An autonomous target acquisition capability enables the IRS to locate the mid-infrared centroid of a source, providing the information so that the spacecraft can accurately offset that centroid to a selected slit. This feature is particularly useful when taking spectra of sources with poorly known coordinates. An automated data-reduction pipeline has been developed at the Spitzer Science Center.
Keywords
  • Infrared,
  • General,
  • Instrumentation,
  • Spectrographs,
  • Space Vehicles,
  • Instruments
Publication Date
September, 2004
DOI
10.1086/423134
Citation Information
J. R. Houck, T. L. Roellig, J. van Cleve, W. J. Forrest, et al.. "The Infrared Spectrograph* (IRS) on the Spitzer Space Telescope" The Astrophysical Journal Vol. 154 Iss. 1 (2004) p. 18 - 24
Available at: http://works.bepress.com/sarah_higdon/32/