Physics – Optics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..50p&link_type=abstract
Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -
Physics
Optics
Scientific paper
The Gemini Planet Imager high contrast adaptive optics system delivers its science light to a lenslet-based integral field spectrograph (IFS) developed by UCLA and the Université de Montréal. For detecting and characterizing planetary companions, the IFS can obtain spectra in five bands from 0.95-2.4 microns with spectral resolution from 30 to 80. For studies of light scattered from circumstellar disks, an integral field polarimetry mode uses a Wollaston prism in place of the spectral dispersing prism to achieve broadband dual-channel polarimetry. The 2.8 arcsec square field of view is matched to the AO coronagraphic "dark hole" region at the camera's longest wavelength. There is also a pupil viewing mode for alignment. We describe the optical design of the IFS, discuss tradeoffs made in the design process, and summarize construction and testing status. (See the presentation by J. Chilcote for more detailed test results.) End-to-end observation simulations processed through our existing data reduction pipeline demonstrate that the IFS, together with the rest of the GPI system, will be a powerful tool for studying the properties of young Jovian exoplanets.
Chilcote Jeffrey K.
Doyon Thibault S. R.
Graham James R.
Larkin James E.
Macintosh Bruce Alan
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