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Assessing the Performance Limits of Internal Coronagraphs Through End-to-End ModelingAs part of the NASA ROSES Technology Demonstrations for Exoplanet Missions (TDEM) program, we conducted a numerical modeling study of three internal coronagraphs (PIAA, vector vortex, hybrid bandlimited) to understand their behaviors in realistically-aberrated systems with wavefront control (deformable mirrors). This investigation consisted of two milestones: (1) develop wavefront propagation codes appropriate for each coronagraph that are accurate to 1% or better (compared to a reference algorithm) but are also time and memory efficient, and (2) use these codes to determine the wavefront control limits of each architecture. We discuss here how the milestones were met and identify some of the behaviors particular to each coronagraph. The codes developed in this study are being made available for community use. We discuss here results for the HBLC and VVC systems, with PIAA having been discussed in a previous proceeding.
Document ID
20150007824
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Krist, John E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Belikov, Ruslan
(NASA Ames Research Center Moffett Field, CA, United States)
Pueyo, Laurent
(Space Telescope Science Inst. Baltimore, MD, United States)
Mawet, Dimitri P.
(European Southern Observatory Santiago, Chile)
Moody, Dwight
(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)
Shaklan, Stuart B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 8, 2015
Publication Date
August 25, 2013
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: SPIE 2013 Photonic Conference on EOS Observing Systems
Location: San Diego, CA
Country: United States
Start Date: August 25, 2013
End Date: August 29, 2013
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
Inner working angle (IWA)
Coronagraph

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