NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Conceptual Design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) for the Subaru TelescopeRecent 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 exoplanets on the Subaru telescope. The IFS will provide spectral information for 140 x 140 spatial elements over a 1.75 arcsecs x 1.75 arcsecs field of view (FOV). CHARIS will operate in the near infrared (lambda = 0.9 - 2.5 micron) 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.
Document ID
20120016594
Document Type
Preprint (Draft being sent to journal)
Authors
Peters, Mary Anne (Princeton Univ. Princeton, NJ, United States)
Groff, Tyler (Princeton Univ. Princeton, NJ, United States)
Kasdin, N. Jeremy (Princeton Univ. Princeton, NJ, United States)
McElwain, Michael W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Galvin, Michael (Princeton Univ. Princeton, NJ, United States)
Carr, Michael A. (Princeton Univ. Princeton, NJ, United States)
Lupton, Robert (Princeton Univ. Princeton, NJ, United States)
Gunn, James E. (Princeton Univ. Princeton, NJ, United States)
Knapp, Gillian (Princeton Univ. Princeton, NJ, United States)
Gong, Qian (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Carlotti, Alexis (Princeton Univ. Princeton, NJ, United States)
Brandt, Timothy (Princeton Univ. Princeton, NJ, United States)
Janson, Markus (Princeton Univ. Princeton, NJ, United States)
Guyon, Olivier (Subaru Telescope Hilo, HI, United States)
Martinache, Frantz (Subaru Telescope Hilo, HI, United States)
Hayashi, Masahiko (Subaru Telescope Hilo, HI, United States)
Takato, Naruhisa (Subaru Telescope Hilo, HI, United States)
Date Acquired
August 26, 2013
Publication Date
January 1, 2012
Subject Category
Instrumentation and Photography
Report/Patent Number
GSFC.JA.7401.2012
Funding Number(s)
CONTRACT_GRANT: 23103002
Distribution Limits
Public
Copyright
Public Use Permitted.

Available Downloads

NameType 20120016594.pdf STI