10 July 2014 Characterization of the atmospheric dispersion corrector of the Gemini planet imager
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Abstract
An Atmospheric Dispersion Corrector (ADC) uses a double-prism arrangement to nullify the vertical chromatic dispersion introduced by the atmosphere at non-zero zenith distances. The ADC installed in the Gemini Planet Imager (GPI) was first tested in August 2012 while the instrument was in the laboratory. GPI was installed at the Gemini South telescope in August 2013 and first light occurred later that year on November 11th. In this paper, we give an overview of the characterizations and performance of this ADC unit obtained in the laboratory and on sky, as well as the structure of its control software.
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Pascale Hibon, Sandrine Thomas, Jennifer Dunn, Jennifer Atwood, Leslie Saddlemyer, Naru Sadakuni, Stephen Goodsell, Bruce Macintosh, James Graham, Marshall Perrin, Fredrik Rantakyro, Vincent Fesquet, Andrew Serio, Carlos Quiroz, Andrew Cardwell, Gaston Gausachs, Dmitry Savransky, Dan Kerley, Markus Hartung, Ramon Galvez, Kayla Hardie, "Characterization of the atmospheric dispersion corrector of the Gemini planet imager", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91474U (10 July 2014); doi: 10.1117/12.2055545; http://dx.doi.org/10.1117/12.2055545
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KEYWORDS
Gemini Planet Imager

Prisms

Telescopes

Zemax

Gemini Observatory

Coronagraphy

Stars

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