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Post-Coronagraph Wavefront Sensor for Gemini Planet ImagerThe calibration wavefront system for the Gemini Planet Imager (GPI) will measure the complex wavefront at the apodized pupil and provide slow phase errors to the AO system to mitigate against image plane speckles 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. We will show laboratory results from our calibration testbed that demonstrate the subsystem performance at levels commensurate with those required on the final instrument.
Document ID
20150008456
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Wallace, J. Kent
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Burruss, Rick
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Pueyo, Laurent
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Soummer, Remi
(Space Telescope Science Inst. Baltimore, MD, United States)
Shelton, Chris
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bartos, Randall
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Fregoso, Felipe
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Nemati, Bijan
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Best, Paul
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Angione, John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 19, 2015
Publication Date
August 2, 2009
Subject Category
Optics
Instrumentation And Photography
Meeting Information
Meeting: SPIE Nanoscience and Engineering Symposium
Location: San Diego, CA
Country: United States
Start Date: August 2, 2009
End Date: August 3, 2009
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
interferometry
planet detection

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