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Proceedings Paper

The infrared imaging spectrograph (IRIS) for TMT: instrument overview
Author(s): 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; Shelley A. Wright
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Paper Abstract

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.

Paper Details

Date Published: 15 July 2010
PDF: 13 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773529 (15 July 2010); doi: 10.1117/12.856305
Show Author Affiliations
James E. Larkin, Univ. of California, Los Angeles (United States)
Anna M. Moore, California Institute of Technology (United States)
Elizabeth J. Barton, Univ. of California, Irvine (United States)
Brian Bauman, Lawrence Livermore National Lab. (United States)
Khanh Bui, California Institute of Technology (United States)
John Canfield, Univ. of California, Los Angeles (United States)
David Crampton, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Alex Delacroix, California Institute of Technology (United States)
Murray Fletcher, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
David Hale, California Institute of Technology (United States)
David Loop, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Cyndie Niehaus, Univ. of California, Los Angeles (United States)
Andrew C. Phillips, Univ. of California Observatories, Univ. of California, Santa Cruz (United States)
Vladimir Reshetov, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Luc Simard, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Roger Smith, California Institute of Technology (United States)
Ryuji Suzuki, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Thirty Meter Telescope Observatory Corp. (United States)
Tomonori Usuda, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Shelley A. Wright, Univ. of California, Irvine (United States)
Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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