28 August 2014 High-contrast visible nulling coronagraph for segmented and arbitrary telescope apertures
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Abstract
Exoplanet coronagraphy will be driven by the telescope architectures available and thus the system designer must have available one or more suitable coronagraphic instrument choices that spans the set of telescope apertures, including filled (off-axis), obscured (e.g. with secondary mirror spiders and struts), segmented apertures, such as JWST, and interferometric apertures. In this work we present one such choice of coronagraph, known as the visible nulling coronagraph (VNC), that spans all four types of aperture and also employs differential sensing and control.
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Brian A. Hicks, Richard G. Lyon, Matthew R. Bolcar, Mark Clampin, Peter Petrone, "High-contrast visible nulling coronagraph for segmented and arbitrary telescope apertures", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91432S (28 August 2014); doi: 10.1117/12.2056296; http://dx.doi.org/10.1117/12.2056296
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KEYWORDS
Telescopes

Coronagraphy

Image segmentation

Spatial frequencies

Space telescopes

Coating

Polarization

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