9 August 2016 Gemini Planet Imager observational calibrations XI: pipeline improvements and enhanced calibrations after two years on sky
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Abstract
The Gemini Planet Imager has been successfully obtaining images and spectra of exoplanets, brown dwarfs, and debris and protoplanetary circumstellar disks using its integral field spectrograph and polarimeter. GPI observations are transformed from raw data into high-quality astrometrically and photometrically calibrated datacubes using the GPI Data Reduction Pipeline, an open-source software framework continuously developed by our team and available to the community. It uses a flexible system of reduction recipes composed of individual primitive steps, allowing substantial customization of processing depending upon science goals. This paper provides a broad overview of the GPI pipeline, summarizes key lessons learned, and describes improved calibration methods and new capabilities available in the latest version. Enhanced automation better supports observations at the telescope with streamlined and rapid data processing, for instance through real-time assessments of contrast performance and more automated calibration file processing. We have also incorporated the GPI Data Reduction Pipeline as one component in a larger automated data system to support the GPI Exoplanet Survey campaign, while retaining its flexibility and stand-alone capabilities to support the broader GPI observer community. Several accompanying papers describe in more detail specific aspects of the calibration of GPI data in both spectral and polarimetric modes.
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Marshall D. Perrin, Marshall D. Perrin, Patrick Ingraham, Patrick Ingraham, Katherine B. Follette, Katherine B. Follette, Jérôme Maire, Jérôme Maire, Jason J. Wang, Jason J. Wang, Dmitry Savransky, Dmitry Savransky, Pauline Arriaga, Pauline Arriaga, Vanessa P. Bailey, Vanessa P. Bailey, Sebastian Bruzzone, Sebastian Bruzzone, Jeffrey K. Chilcote, Jeffrey K. Chilcote, Robert J. De Rosa, Robert J. De Rosa, Zachary H. Draper, Zachary H. Draper, Michael P. Fitzgerald, Michael P. Fitzgerald, Alexandra Z. Greenbaum, Alexandra Z. Greenbaum, Li-Wei Hung, Li-Wei Hung, Quinn Konopacky, Quinn Konopacky, Bruce Macintosh, Bruce Macintosh, Franck Marchis, Franck Marchis, Christian Marois, Christian Marois, Maxwell A. Millar-Blanchaer, Maxwell A. Millar-Blanchaer, Eric Nielsen, Eric Nielsen, Abhijith Rajan, Abhijith Rajan, Julien Rameau, Julien Rameau, Fredrik T. Rantakyro, Fredrik T. Rantakyro, Jean-Baptiste Ruffio, Jean-Baptiste Ruffio, Kimberly Ward-Duong, Kimberly Ward-Duong, Schuyler G. Wolff, Schuyler G. Wolff, Joseph Zalesky, Joseph Zalesky, "Gemini Planet Imager observational calibrations XI: pipeline improvements and enhanced calibrations after two years on sky", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990837 (9 August 2016); doi: 10.1117/12.2233197; https://doi.org/10.1117/12.2233197
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