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Wavefront Amplitude Variation of TPF's High Contrast Imaging Testbed: Modeling and ExperimentKnowledge of wavefront amplitude is as important as the knowledge of phase for a coronagraphic high contrast imaging system. Efforts have been made to understand various contributions of the amplitude variation in Terrestrial Planet Finder's (TPF) High Contrast Imaging Testbed (HCIT). Modeling of HCIT with as-built mirror surfaces has shown an amplitude variation of 1.3% due to the phase-amplitude mixing for the testbed's front-end optics. Experimental measurements on the testbed have shown the amplitude variation is about 2.5% with the testbed's illumination pattern has a major contribution as the low order amplitude variation.
Document ID
20100017442
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Shi, Fang
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lowman, Andrew E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Moody, Dwight C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Niessner, Albert F.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Trauger, John T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
July 31, 2005
Subject Category
Optics
Meeting Information
Meeting: Astronomical Optics and Instrumentation
Location: San Diego, CA
Country: United States
Start Date: July 31, 2005
End Date: August 4, 2005
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
coronagraph
wavefront sensing and control
high contrasting imaging
Terrestrial Planet Finder (TPF)

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