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Proceedings Paper

Gemini planet imager observational calibrations III: empirical measurement methods and applications of high-resolution microlens PSFs
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Paper Abstract

The newly commissioned Gemini Planet Imager (GPI) combines extreme adaptive optics, an advanced coronagraph, precision wavefront control and a lenslet-based integral field spectrograph (IFS) to measure the spectra of young extrasolar giant planets between 0.9-2.5 μm. Each GPI detector image, when in spectral model, consists of ~37,000 microspectra which are under or critically sampled in the spatial direction. This paper demonstrates how to obtain high-resolution microlens PSFs and discusses their use in enhancing the wavelength calibration, flexure compensation and spectral extraction. This method is generally applicable to any lenslet-based integral field spectrograph including proposed future instrument concepts for space missions.

Paper Details

Date Published: 14 July 2014
PDF: 11 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91477K (14 July 2014); doi: 10.1117/12.2055283
Show Author Affiliations
Patrick Ingraham, Kavli Institute for Particle Astrophysics and Cosmology, Stanford Univ. (United States)
Univ. de Montréal (Canada)
Jean-Baptiste Ruffio, SETI Institute (United States)
Institut Supérieur de l’Aéronautique et de l’Espace (France)
Marshall D. Perrin, Space Telescope Science Institute (United States)
Schuyler G. Wolff, Space Telescope Science Institute (United States)
Zachary H. Draper, Univ. of Victoria (Canada)
Jerome Maire, Dunlap Institute for Astronomy and Astrophysics, Univ. of Toronto (Canada)
Franck Marchis, SETI Institute (United States)
Vincent Fesquet, Gemini Observatory (Chile)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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