High dynamic range imaging in space: overview and wavefront control

Details High dynamic range imaging in space: overview and wavefront control High dynamic range imaging in space: overview and wavefront control

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6288e...9g&link_type=abstract

Current Developments in Lens Design and Optical Engineering VII. Edited by Mouroulis, Pantazis Z.; Smith, Warren J.; Johnson, R

Physics

1

Scientific paper

NASA is endeavoring to launch missions capable of detecting Earth-like planets around neighboring stars. In visible wavelengths, this requires better than one 10 to the minus ten suppression of scattered light as close as 50 milli-arcsec to the stellar image. This extraordinary requirement is within reach but it requires broad-band wave front control to sub-Angstrom levels. We describe several high dynamic range imaging solutions, describe the various factors that contribute to the scattered light level and introduce a novel closed-loop broad-band correction system, suitable for the Shaped Pupil Coronagraph and the Lyot Coronagraph.

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