IRS: The Infrared Spectrograph on SIRTF

The infrared spectrograph (IRS) to be flown in the Space Infrared Telescope Facility (SIRTF) makes use of many recent technological advances and will enable numerous new scientific investigations. The IRS is a broad-band (5 to 40 micrometers ) low and medium resolution (R equals (lambda) /(Delta) (lambda) equals 80 and 600) spectrograph, designed to take advantage of the low background conditions provided by SIRTF; it has no moving parts, and it will be background limited over much of its wavelength range. The IRS is a joint project of Cornell University, the California Institute of Technology, the University of Rochester, Ball Aerospace Group, the NASA Ames Research Center, and the Jet Propulsion Laboratory.