NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Optical Design of CHARIS: An Exoplanet IFS for the Subaru TelescopeHigh-contrast imaging techniques now make possible both imaging and spectroscopy of planets around nearby stars. We present the optical design for 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 138×138 spatial elements over a 2.07 arcsec × 2.07 arcsec field of view (FOV). CHARIS will operate in the near infrared (lambda = 1.15 − 2.5 micrometers) and will feature two spectral resolution modes of R is approximately 18 (low-res mode) and R is approximately 73 (high-res mode). Taking advantage of the Subaru telescope adaptive optics systems and coronagraphs (AO188 and SCExAO), CHARIS will provide sufficient contrast to obtain spectra of young self-luminous Jupiter-mass exoplanets. CHARIS will undergo CDR in October 2013 and is projected to have first light by the end of 2015. We report here on the current optical design of CHARIS and its unique innovations.
Document ID
20140017483
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Peters-Limbach, Mary
(Princeton Univ. Princeton, NJ, United States)
Groff, Tyler
(Princeton Univ. Princeton, NJ, United States)
Kasdin, N. Jeremy
(Princeton Univ. Princeton, NJ, United States)
Driscoll, Dave
(L-3 Communications Corp. Wilmington, MA, United States)
Galvin, Michael
(Princeton Univ. Princeton, NJ, United States)
Foster, Allen
(Pennsylvania State Univ. University Park, PA, United States)
Carr, Michael
(Princeton Univ. Princeton, NJ, United States)
LeClerc, Dave
(L-3 Communications Corp. Wilmington, MA, United States)
Fagan, Rad
(L-3 Communications Corp. Wilmington, MA, United States)
McElwain, Michael
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Knapp, Gillian
(Princeton Univ. Princeton, NJ, United States)
Brandt, Timothy
(Princeton Univ. Princeton, NJ, United States)
Janson, Markus
(Princeton Univ. Princeton, NJ, United States)
Guyone, Olivier
(Subaru Telescope Hilo, HI, United States)
Jovanovic, Nemanja
(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
December 17, 2014
Publication Date
August 25, 2013
Subject Category
Optics
Astronomy
Report/Patent Number
GSFC-E-DAA-TN14959
Meeting Information
Meeting: SPIE 2013 Optics and Photonics Conference
Location: San Diego, CA
Country: United States
Start Date: August 25, 2013
End Date: August 29, 2013
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: MEXT 23103002
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Integral Field Spectrograph
High Contrast Imaging
Exoplanets
No Preview Available