The Gemini Planet Imager

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The Gemini Planet Imager (GPI) is a high-contrast imager at the Gemini South telescope that an combines an extreme adaptive optics system, a coronagraph and an integral field spectrograph/polarimeter in order to directly image exoplanets. I have worked extensively on GPI's polarimetry mode since about 2011, characterizing its performance (both in-lab and on-sky), developing data reduction proceedures and using it for science.