The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument overview

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1117/12.2055216
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Name affiliation
  1. National Research Council Canada. National Science Infrastructure
FormatText
TypeArticle
Proceedings titleGround-Based and Airborne Instrumentation for Astronomy V
Series titleProceedings of SPIE; no. 9147
ConferenceGround-Based and Airborne Instrumentation for Astronomy V, June 22-26, 2014
ISSN0277-786X
1996-756X
ISBN9780819496157
Article number914724
SubjectAstronomy; Atmospheric movements; Diffraction; Infrared imaging; Infrared spectroscopy; Optical telescopes; Spectrographs; Telescopes; Thermography (imaging); Wavefronts; Adaptive optics systems; Astrophysical objects; Atmospheric dispersion; Extremely Large Telescopes; High angular resolutions; High redshift-galaxies; Integral field spectrograph; Thirty Meter Telescope; Adaptive optics
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.
Publication date
PublisherSPIE
LanguageEnglish
Peer reviewedYes
NPARC number21275522
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