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Proceedings Paper

Prospects for exoplanet imaging in multi-star systems with starshades
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Paper Abstract

We explore the capabilities of a starshade mission to directly image multi-star systems. In addition to the diffracted and scattered light for the on-axis star, a multi-star system features additional starlight leakage from the off-axis star that must also be controlled. A basic option is for additional starshades to block the off- axis stars. An interesting option takes the form of hybrid operation of a starshade in conjunction with an internal starlight suppression. Two hybrid scenarios are considered. One such scenario includes the coronagraph instrument blocking the on-axis star, with the starshade blocking off-axis starlight. Another scenario uses the wavefront control system in the coronagraph instrument and using a recent Super-Nyquist Wavefront Control (SNWC) technique can remove the off-axis stars leakage to enable a region of high-contrast around the on-axis star blocked by the starshade. We present simulation results relevant for the WFIRST telescope.

Paper Details

Date Published: 1 September 2017
PDF: 13 pages
Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104001D (1 September 2017); doi: 10.1117/12.2274267
Show Author Affiliations
Dan Sirbu, NASA Ames Research Ctr. (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Eduardo Bendek, NASA Ames Research Ctr. (United States)
Elias Holte, NASA Ames Research Ctr. (United States)
Minnesota State Univ. (United States)
A. J. Riggs, Jet Propulsion Lab. (United States)
Stuart Shaklan, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 10400:
Techniques and Instrumentation for Detection of Exoplanets VIII
Stuart Shaklan, Editor(s)

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