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15 July 2010 An apodizing phase plate coronagraph for VLT/NACO
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Abstract
We describe a coronagraphic optic for use with CONICA at the VLT that provides suppression of diffraction from 1.8 to 7 λ/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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Matthew A. Kenworthy, Sascha P. Quanz, Michael R. Meyer, Markus E. Kasper, Rainer Lenzen, Johanan L. Codona, Julien H.V. Girard, and Philip M. Hinz "An apodizing phase plate coronagraph for VLT/NACO", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773532 (15 July 2010); https://doi.org/10.1117/12.856811
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