Gemini Planet Imager observational calibrations I: Overview of the GPI data reduction pipeline

Marshall D. Perrin, Jérôme Maire, Patrick Ingraham, Dmitry Savransky, Max Millar-Blanchaer, Schuyler G. Wolff, Jean Baptiste Ruffio, Jason J. Wang, Zachary H. Draper, Naru Sadakuni, Christian Marois, Abhijith Rajan, Michael P. Fitzgerald, Bruce MacIntosh, James R. Graham, René Doyon, James E. Larkin, Jeffrey K. Chilcote, Stephen J. Goodsell, David W. PalmerKathleen Labrie, Mathilde Beaulieu, Robert J. De Rosa, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Quinn Konopacky, David Lafreniere, Jean Francois Lavigne, Franck Marchis, Jennifer Patience, Laurent Pueyo, Fredrik T. Rantakyrö, Rémi Soummer, Anand Sivaramakrishnan, Sandrine Thomas, Kimberly Ward-Duong, Sloane Wiktorowicz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

104 Scopus citations


The Gemini Planet Imager (GPI) has as its science instrument an infrared integral field spectrograph/polarimeter (IFS). Integral field spectrographs are scientificially powerful but require sophisticated data reduction systems. For GPI to achieve its scientific goals of exoplanet and disk characterization, IFS data must be reconstructed into high quality astrometrically and photometrically accurate datacubes in both spectral and polarization modes, via flexible software that is usable by the broad Gemini community. The data reduction pipeline developed by the GPI instrument team to meet these needs is now publicly available following GPI's commissioning. This paper, the first of a series, provides a broad overview of GPI data reduction, summarizes key steps, and presents the overall software framework and implementation. Subsequent papers describe in more detail the algorithms necessary for calibrating GPI data. The GPI data reduction pipeline is open source, available from, and will continue to be enhanced throughout the life of the instrument. It implements an extensive suite of task primitives that can be assembled into reduction recipes to produce calibrated datasets ready for scientific analysis. Angular, spectral, and polarimetric differential imaging are supported. Graphical tools automate the production and editing of recipes, an integrated calibration database manages reference files, and an interactive data viewer customized for high contrast imaging allows for exploration and manipulation of data.

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy V
EditorsSuzanne K. Ramsay, Ian S. McLean, Hideki Takami
ISBN (Electronic)9780819496157
StatePublished - 2014
EventGround-Based and Airborne Instrumentation for Astronomy V - Montreal, Canada
Duration: Jun 22 2014Jun 26 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherGround-Based and Airborne Instrumentation for Astronomy V


  • data processing
  • exoplanets
  • high contrast imaging
  • integral field spectroscopy
  • polarimetry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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