Gemini Planet Imager observational calibrations XV: instrument calibrations after six years on sky

Robert J. De Rosa; Thomas M. Esposito; Aidan Gibbs; Vanessa P. Bailey; Michael P. Fitzgerald; Jeffrey Chilcote; Gaspard Duchêne; Quinn Konopacky; Bruce Macintosh; Maxwell A. Millar-Blanchaer; Meiji M. Nguyen; Eric L. Nielsen; Marshall D. Perrin; Julien Rameau; Jason J. Wang

doi:10.1117/12.2561071

13 December 2020 Gemini Planet Imager observational calibrations XV: instrument calibrations after six years on sky

Robert J. De Rosa, Thomas M. Esposito, Aidan Gibbs, Vanessa P. Bailey, Michael P. Fitzgerald, Jeffrey Chilcote, Gaspard Duchêne, Quinn Konopacky, Bruce Macintosh, Maxwell A. Millar-Blanchaer, Meiji M. Nguyen, Eric L. Nielsen, Marshall D. Perrin, Julien Rameau, Jason J. Wang

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114475A (2020) https://doi.org/10.1117/12.2561071
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The Gemini Planet Imager (GPI) is a high-contrast adaptive optics instrument designed to detect and characterize substellar companions and circumstellar debris disks around nearby young stars using infrared integral field spectroscopy and polarimetry. GPI has been in routine operations at Gemini South for the past six years. Because precise astrometry and photometry of exoplanets is critical to GPI's science, we undertook extensive efforts both in-lab and on-sky to refine the astrometric and photometric calibration of the instrument. We describe revisions to the GPI Data Reduction Pipeline (DRP) that account for these revised calibrations, and that fix several issues identified over the previous six years, including some subtle issues affecting astrometric calibrations caused by a drift of the instrument’s clock. These calibrations are critical for the interpretation of observations obtained with GPI, and for a comparison with measurements from other high-contrast imaging instruments.

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Robert J. De Rosa, Thomas M. Esposito, Aidan Gibbs, Vanessa P. Bailey, Michael P. Fitzgerald, Jeffrey Chilcote, Gaspard Duchêne, Quinn Konopacky, Bruce Macintosh, Maxwell A. Millar-Blanchaer, Meiji M. Nguyen, Eric L. Nielsen, Marshall D. Perrin, Julien Rameau, and Jason J. Wang "Gemini Planet Imager observational calibrations XV: instrument calibrations after six years on sky", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114475A (13 December 2020); https://doi.org/10.1117/12.2561071

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