Characterization of the Atmospheric Dispersion Corrector of the Gemini Planet Imager
Pascale Hibon, Sandrine Thomas, Jennifer Dunn, Jenny Atwood, Les, Saddlemyer, Naru Sadakuni, Stephen Goodsell, Bruce Macintosh, James Graham,, Marshall Perrin, Fredrik Rantakyr\"o, Vincent Fesquet, Andrew Serio, Carlos, Quiroz, Andrew Cardwell, Gaston Gausachs, Dmitry Savransky
TL;DR
This paper details the laboratory and on-sky characterization of the Atmospheric Dispersion Corrector in the Gemini Planet Imager, highlighting its design, testing, and performance at the Gemini South telescope.
Contribution
It provides the first comprehensive analysis of the ADC's performance and control software in both laboratory and operational settings.
Findings
Successful laboratory testing of the ADC in 2012
On-sky performance validation at Gemini South in 2013
Detailed overview of control software structure
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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