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Proceedings Paper

The Gemini Planet Imager calibration testbed
Author(s): J. Kent Wallace; Rick Burruss; Laurent Pueyo; Remi Soummer; Chris Shelton; Randall Bartos; Felipe Fregoso; Bijan Nemati; Paul Best; John Angione
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Paper Abstract

The calibration wavefront system for GPI will measure the complex wavefront at the apodized pupil and provide slow phase corrections to the AO system to mitigate against errors that would cause a loss in contrast. This talk describes both the low-order and high-order sensors in the calibration wavefront sensor and how the information is combined to form the wavefront estimate before the coronagraph. Expected performance for this wavefront sensor will also be described for typical observing scenarios. Finally, we will show labratory results from our calibration testbed that demonstrate the instrument performance at levels commensurate with those required on the GPI instrument.

Paper Details

Date Published: 19 August 2009
PDF: 9 pages
Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400S (19 August 2009); doi: 10.1117/12.826525
Show Author Affiliations
J. Kent Wallace, Jet Propulsion Lab. (United States)
Rick Burruss, Jet Propulsion Lab. (United States)
Laurent Pueyo, Jet Propulsion Lab. (United States)
Remi Soummer, Space Telescope Science Institute (United States)
Chris Shelton, Jet Propulsion Lab. (United States)
Randall Bartos, Jet Propulsion Lab. (United States)
Felipe Fregoso, Jet Propulsion Lab. (United States)
Bijan Nemati, Jet Propulsion Lab. (United States)
Paul Best, Jet Propulsion Lab. (United States)
John Angione, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 7440:
Techniques and Instrumentation for Detection of Exoplanets IV
Stuart B. Shaklan, Editor(s)

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