Characterization of the Atmospheric Dispersion Corrector of the Gemini Planet Imager

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.

16 pages, 12 figures. Proceedings of the SPIE, 9147-183

References in corpus (2)

• The Gemini Planet Imager: First Light
• Gemini Planet Imager One Button Approach

Cited by in corpus (4)

• Polarimetry with the Gemini Planet Imager: Methods, Performance at First Light, and the Circumstellar Ring around HR 4796A
• On-sky closed loop correction of atmospheric dispersion for high-contrast coronagraphy and astrometry
• Gemini Planet Imager integration to the Gemini South telescope software environment
• Analyzing the Atmospheric Dispersion Correction of the Gemini Planet Imager: residual dispersion above design requirements