Gemini Planet Imager: From Integration And Test To Planning Observations

Details Gemini Planet Imager: From Integration And Test To Planning Observations Gemini Planet Imager: From Integration And Test To Planning Observations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924514t&link_type=abstract

American Astronomical Society, AAS Meeting #219, #245.14

Physics

Optics

Scientific paper

Achieving higher contrast is an ongoing theme in exoplanet imaging, both from earth and from space. Next-generation instruments such as the Gemini Planet Imager and SPHERE are designed to achieve contrast ratios of 106 - 107 from the ground; this requires very good static and dynamic wavefront correction as well as very good coronagraphic control of diffraction. GPI is a facility instrument, now in integration and test at the Laboratory for Adaptive Optics in Santa Cruz California. Its first light on the 8-m Gemini South telescope is expected by the end of 2012.
GPI combines a high density MEMS deformable mirror (1700 subapertures), an apodized-pupil Lyot coronagraph and a high-accuracy IR interferometer calibration system.
The instrument is a near-infrared integral field spectrograph (IFS) that will allow detection and characterization of self-luminous extrasolar planets at planet/star contrast ratios of 10-7. One additional feature of the IFS is a polarimetric mode to characterize scattered light from disks. We will discuss the status of the integration and test happening at the University of Santa Cruz California and discuss its scientific capabilities.

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