16 September 2011 Integration and test of the Gemini Planet Imager
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Abstract
Exoplanet imaging is driving a race to higher contrast imaging, both from earth and from space. Next-generation instruments such as the Gemini Planet Imager (GPI) and SPHERE are designed to achieve contrast ratios of 10-6 - 10-7 this requires very good wavefront correction and coronagraphic control of diffraction. GPI is a facility instrument, now in integration and test, with first light on the 8-m Gemini South telescope expected by the middle of 2012. It combines a 1700 subaperture AO system using a MEMS deformable mirror, an apodized-pupil Lyot coronagraph, a high-accuracy IR interferometric wavefront calibration system, and a nearinfrared integral field spectrograph to allow detection and characterization of self-luminous extrasolar planets at planet/star contrast ratios of 10-7. In this paper we will discuss the status of the integration and test now taking place at the University of Santa Cruz California.
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Sandrine J. Thomas, Lisa Poyneer, Rob De Rosa, Bruce Macintosh, Daren Dillon, James K. Wallace, David Palmer, Donald Gavel, Brian Bauman, Leslie Saddlemyer, Stephen Goodsell, "Integration and test of the Gemini Planet Imager", Proc. SPIE 8149, Astronomical Adaptive Optics Systems and Applications IV, 814903 (16 September 2011); doi: 10.1117/12.893728; https://doi.org/10.1117/12.893728
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