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

doi:10.1117/12.926381

24 September 2012 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

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84467U (2012) https://doi.org/10.1117/12.926381
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

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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, and Naruhisa Takato "Conceptual design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) for the Subaru telescope", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84467U (24 September 2012); https://doi.org/10.1117/12.926381

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