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15 July 2010 The infrared imaging spectrograph (IRIS) for TMT: instrument overview
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We present an overview of the design of IRIS, an infrared (0.85 - 2.5 micron) integral field spectrograph and imaging camera for the Thirty Meter Telescope (TMT). With extremely low wavefront error (<30 nm) and on-board wavefront sensors, IRIS will take advantage of the high angular resolution of the narrow field infrared adaptive optics system (NFIRAOS) to dissect the sky at the diffraction limit of the 30-meter aperture. With a primary spectral resolution of 4000 and spatial sampling starting at 4 milliarcseconds, the instrument will create an unparalleled ability to explore high redshift galaxies, the Galactic center, star forming regions and virtually any astrophysical object. This paper summarizes the entire design and basic capabilities. Among the design innovations is the combination of lenslet and slicer integral field units, new 4Kx4k detectors, extremely precise atmospheric dispersion correction, infrared wavefront sensors, and a very large vacuum cryogenic system.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
James E. Larkin, Anna M. Moore, Elizabeth J. Barton, Brian Bauman, Khanh Bui, John Canfield, David Crampton, Alex Delacroix, Murray Fletcher, David Hale, David Loop, Cyndie Niehaus, Andrew C. Phillips, Vladimir Reshetov, Luc Simard, Roger Smith, Ryuji Suzuki, Tomonori Usuda, and Shelley A. Wright "The infrared imaging spectrograph (IRIS) for TMT: instrument overview", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773529 (15 July 2010);

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