CaltechAUTHORS
Published July 15, 2010 | Version Published
Book Section - Chapter Open

The infrared imaging spectrograph (IRIS) for TMT: spectrograph design

Creators

  • 1. ROR icon Lawrence Livermore National Laboratory
  • 2. ROR icon University of California, Irvine
  • 3. ROR icon Herzberg Institute of Astrophysics
  • 4. ROR icon University of California, Los Angeles
  • 5. ROR icon University of Hawaii at Hilo
  • 6. ROR icon University of California, Berkeley

Contributors

Abstract

The Infra-Red Imaging Spectrograph (IRIS) is one of the three first light instruments for the Thirty Meter Telescope (TMT) and is the only one to directly sample the diffraction limit. The instrument consists of a parallel imager and offaxis Integral Field Spectrograph (IFS) for optimum use of the near infrared (0.84um-2.4um) Adaptive Optics corrected focal surface. We present an overview of the IRIS spectrograph that is designed to probe a range of scientific targets from the dynamics and morphology of high-z galaxies to studying the atmospheres and surfaces of solar system objects, the latter requiring a narrow field and high Strehl performance. The IRIS spectrograph is a hybrid system consisting of two state of the art IFS technologies providing four plate scales (4mas, 9mas, 25mas, 50mas spaxel sizes). We present the design of the unique hybrid system that combines the power of a lenslet spectrograph and image slicer spectrograph in a configuration where major hardware is shared. The result is a powerful yet economical solution to what would otherwise require two separate 30m-class instruments.

Additional Information

© 2010 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the National Astronomical Observatory of Japan (NAOJ), the Association of Universities for Research in Astronomy (AURA) and the U.S. National Science Foundation.

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Additional details

Identifiers

Eprint ID
99283
Resolver ID
CaltechAUTHORS:20191015-153950428

Funding

Association of Canadian Universities for Research in Astronomy (ACURA)
Caltech
University of California
Gordon and Betty Moore Foundation
Canada Foundation for Innovation
Ontario Ministry of Research and Innovation
National Research Council of Canada
Natural Sciences and Engineering Research Council of Canada (NSERC)
British Columbia Knowledge Development Fund
National Astronomical Observatory of Japan
Association of Universities for Research in Astronomy (AURA)
NSF

Dates

Created
2019-10-15
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Thirty Meter Telescope
Series Name
Proceedings of SPIE
Series Volume or Issue Number
7735