7 August 2014 The Gemini planet imager: first light and commissioning
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The Gemini Planet Imager (GPI) is a facility extreme-AO high-contrast instrument – optimized solely for study of faint companions – on the Gemini telescope. It combines a high-order MEMS AO system (1493 active actuators), an apodized pupil Lyot coronagraph, a high-accuracy IR post-coronagraph wavefront sensor, and a near-infrared integral field spectrograph. GPI incorporates several other novel features such as ultra-high quality optics, a spatially-filtered wavefront sensor, and new calibration techniques. GPI had first light in November 2013. This paper presnets results of first-light and performance verification and optimization and shows early science results including extrasolar planet spectra and polarimetric detection of the HR4696A disk. GPI is now achieving contrasts approaching 10-6 at 0.5” in 30 minute exposures.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruce A. Macintosh, Andre Anthony, Jenny Atwood, Brian Bauman, Andrew Cardwell, Kris Caputa, Jeffery Chilcote, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erickson, Michael P. Fitzgerald, Donald T. Gavel, Ramon Galvez, Stephen Goodsell, James Graham, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Patrick Ingraham, Dan Kerley, Quinn Konopacky, Kathleen Labrie, James Larkin, Jerome Maire, Franck Marchis, Christian Marois, Max Millar-Blanchaer, Katie Morzinski, Arturo Nunez, Rebecca Oppenheimer, David Palmer, John Pazder, Marshall Perrin, Lisa A. Poyneer, Laurent Pueyo, Carlos Quiroz, Fredrik Rantakyro, Vlad Reshetov, Les Saddlemyer, Naru Sadakuni, Dmitry Savransky, Andrew Serio, Anand Sivaramakrishnan, Malcolm Smith, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Jason Wang, Jason Weiss, Sloane Wiktorowicz, Schuyler G. Wolff, "The Gemini planet imager: first light and commissioning", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480J (7 August 2014); doi: 10.1117/12.2056709; https://doi.org/10.1117/12.2056709


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