Conceptual design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) for the Subaru telescope

Mary Anne Peters, Tyler Groff, N. Jeremy Kasdin, Michael W. McElwain, Michael Galvin, Michael A. Carr, Robert Lupton, James E. Gunn, Gillian Knapp, Qian Gong, Alexis Carlotti, Timothy Brandt, Markus Janson, Olivier Guyon, Frantz Martinache, Masahiko Hayashi, Naruhisa Takato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

34 Scopus citations

Abstract

Recent developments in high-contrast imaging techniques now make possible both imaging and spectroscopy of planets around nearby stars. We present the conceptual design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS), a lenslet-based, cryogenic integral field spectrograph (IFS) for imaging exo-planets on the Subaru telescope. The IFS will provide spectral information for 140x140 spatial elements over a 1.75 arcsecs x 1.75 arcsecs field of view (FOV). CHARIS will operate in the near infrared (λ = 0:9-2:5μm) and provide a spectral resolution of R = 14, 33, and 65 in three separate observing modes. Taking advantage of the adaptive optics systems and advanced coronagraphs (AO188 and SCExAO) on the Subaru telescope, CHARIS will provide sufficient contrast to obtain spectra of young self-luminous Jupiter-mass exoplanets. CHARIS is in the early design phases and is projected to have first light by the end of 2015. We report here on the current conceptual design of CHARIS and the design challenges.

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy IV
DOIs
StatePublished - 2012
EventGround-Based and Airborne Instrumentation for Astronomy IV - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8446
ISSN (Print)0277-786X

Other

OtherGround-Based and Airborne Instrumentation for Astronomy IV
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Adaptive optics
  • Coronagraphy
  • Exoplanets
  • High contrast imaging
  • Integral field spectrograph

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