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An apodizing phase plate coronagraph for VLT/NACO

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arxiv 1007.3448 v1 pith:JGBM772T submitted 2010-07-20 astro-ph.IM

classification astro-ph.IM
keywords opticplaneapodizingarcsecondsconicacontrastcoolcoronagraph
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We describe a coronagraphic optic for use with CONICA at the VLT that provides suppression of diffraction from 1.8 to 7 lambda/D at 4.05 microns, an optimal wavelength for direct imaging of cool extrasolar planets. The optic is designed to provide 10 magnitudes of contrast at 0.2 arcseconds, over a D-shaped region in the image plane, without the need for any focal plane occulting mask.

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