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Proceedings Paper

Assessing the performance limits of internal coronagraphs through end-to-end modeling
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Paper Abstract

As 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.

Paper Details

Date Published: 26 September 2013
PDF: 15 pages
Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88640P (26 September 2013); doi: 10.1117/12.2024954
Show Author Affiliations
John E. Krist, Jet Propulsion Lab. (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Laurent Pueyo, Space Telescope Science Institute (United States)
Dimitri P. Mawet, European Southern Observatory (Chile)
Dwight Moody, Jet Propulsion Lab. (United States)
John T. Trauger, Jet Propulsion Lab. (United States)
Stuart B. Shaklan, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 8864:
Techniques and Instrumentation for Detection of Exoplanets VI
Stuart Shaklan, Editor(s)

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