24 September 2012 Conceptual design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) for the Subaru telescope
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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, Mary Anne Peters, Tyler Groff, Tyler Groff, N. Jeremy Kasdin, N. Jeremy Kasdin, Michael W. McElwain, Michael W. McElwain, Michael Galvin, Michael Galvin, Michael A. Carr, Michael A. Carr, Robert Lupton, Robert Lupton, James E. Gunn, James E. Gunn, Gillian Knapp, Gillian Knapp, Qian Gong, Qian Gong, Alexis Carlotti, Alexis Carlotti, Timothy Brandt, Timothy Brandt, Markus Janson, Markus Janson, Olivier Guyon, Olivier Guyon, Frantz Martinache, Frantz Martinache, Masahiko Hayashi, Masahiko Hayashi, Naruhisa Takato, 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); doi: 10.1117/12.926381; https://doi.org/10.1117/12.926381
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