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The Vector Vortex Coronagraph: sensitivity to low-order aberrations, central obscuration, chromaticism, and polarization

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dc.contributor.author Mawet, Dimitri
dc.contributor.author Pueyo, Laurent
dc.contributor.author Moody, Dwight
dc.contributor.author Krist, John
dc.contributor.author Serabyn, Eugene
dc.date.accessioned 2014-09-18T21:35:00Z
dc.date.available 2014-09-18T21:35:00Z
dc.date.issued 2010-06-27
dc.identifier.citation SPIE Astronomical Telescopes and Instrumentation 2010, San Diego, California, June 27 - July 2, 2010 en_US
dc.identifier.clearanceno 10-2372
dc.identifier.uri http://hdl.handle.net/2014/44716
dc.description.abstract The Vector Vortex Coronagraph is a phase-based coronagraph, one of the most efficient in terms of inner working angle, throughput, discovery space, contrast, and simplicity. Using liquid-crystal polymer technology, this new coronagraph has recently been the subject of lab demonstrations in the near-infrared, visible and was also used on sky at the Palomar observatory in the H and K bands (1.65 and 2.2 μm, respectively) to image the brown dwarf companion to HR 7672, and the three extasolar planets around HR 8799. However, despite these recent successes, the Vector Vortex Coronagraph is, as are most coronagraphs, sensitive to the central obscuration and secondary support structures, low-order aberrations (tip-tilt, focus, etc), bandwidth (chromaticism), and polarization when image-plane wavefront sensing is performed. Here, we consider in detail these sensitivities as a function of the topological charge of the vortex and design properties inherent to the manufacturing technology, and show that in practice all of them can be mitigated to meet specific needs. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject High contrast imaging en_US
dc.subject exoplanets en_US
dc.subject phase-mask coronagraphy en_US
dc.subject optical vortex en_US
dc.subject adaptive optics en_US
dc.subject wavefront control en_US
dc.subject small space-based telescopes en_US
dc.subject large space-based telescopes en_US
dc.subject large ground-based telescopes en_US
dc.subject extremely large ground-based telescopes en_US
dc.title The Vector Vortex Coronagraph: sensitivity to low-order aberrations, central obscuration, chromaticism, and polarization en_US
dc.type Preprint en_US


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