6 August 2014 The Infrared Imaging Spectrograph (IRIS) for TMT: instrument overview
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Abstract
We present an overview of the design of IRIS, an infrared (0.84 - 2.4 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.
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Anna M. Moore, James E. Larkin, Shelley A. Wright, Brian Bauman, Jennifer Dunn, Brent Ellerbroek, Andrew C. Phillips, Luc Simard, Ryuji Suzuki, Kai Zhang, Ted Aliado, George Brims, John Canfield, Shaojie Chen, Richard Dekany, Alex Delacroix, Tuan Do, Glen Herriot, Bungo Ikenoue, Chris Johnson, Elliot Meyer, Yoshiyuki Obuchi, John Pazder, Vladimir Reshetov, Reed Riddle, Sakae Saito, Roger Smith, Ji Man Sohn, Fumihiro Uraguchi, Tomonori Usuda, Eric Wang, Lianqi Wang, Jason Weiss, Robert Wooff, "The Infrared Imaging Spectrograph (IRIS) for TMT: instrument overview", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914724 (6 August 2014); doi: 10.1117/12.2055216; https://doi.org/10.1117/12.2055216
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