Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
Volume 124, Issue 922, Pages 1318-1335Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/669044
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The MMT and Magellan infrared spectrograph (MMIRS) is a cryogenic multiple-slit spectrograph operating in the wavelength range 0.9-2.4 mu m. The refractive optics of MMIRS offer a 6'.9 x 6'.9 field of view for imaging with a spatial resolution of 0.2 arcsec pixel(-1) on a HAWAII-2 array. For spectroscopy, MMIRS can be used with long slits up to 6'.9 long, or with custom slit masks having slitlets distributed over a 4' x 6'.9 area. A range of dispersers offer spectral resolutions of 800-3000. MMIRS is designed to be used at the f/5 foci of the MMT or Magellan Clay 6.5 m telescopes. MMIRS was commissioned in 2009 at the MMT and has been in routine operation at the Magellan Clay Telescope since 2010. MMIRS is being used for a wide range of scientific investigations from exoplanet atmospheres to Ly alpha emitters.
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