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Proceedings Paper

Performance and sensitivity of vortex coronagraphs on segmented space telescopes
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Paper Abstract

The detection of molecular species in the atmospheres of earth-like exoplanets orbiting nearby stars requires an optical system that suppresses starlight and maximizes the sensitivity to the weak planet signals at small angular separations. Achieving sufficient contrast performance on a segmented aperture space telescope is particularly challenging due to unwanted diffraction within the telescope from amplitude and phase discontinuities in the pupil. Apodized vortex coronagraphs are a promising solution that theoretically meet the performance needs for high contrast imaging with future segmented space telescopes. We investigate the sensitivity of apodized vortex coronagraphs to the expected aberrations, including segment co-phasing errors in piston and tip/tilt as well as other low-order and mid-spatial frequency aberrations. Coronagraph designs and their associated telescope requirements are identified for conceptual HabEx and LUVOIR telescope designs.

Paper Details

Date Published: 1 September 2017
PDF: 16 pages
Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000J (1 September 2017); doi: 10.1117/12.2274508
Show Author Affiliations
Garreth Ruane, California Institute of Technology (United States)
Dimitri Mawet, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
Jeffrey Jewell, 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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