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Published July 20, 2005 | Published
Journal Article Open

Limitation of the Pupil Replication Technique in the Presence of Instrumental Defects

Abstract

Pupil replication has been proposed by Greenaway et al. as a new optical technique to improve the suppression of starlight in high dynamic imaging. This Letter extends numerical simulations in the two-dimensional case with various realistic imperfections (surface error, chromatic smearing, and pupil shift). These results demonstrate some strong limitations compared to single-pupil apodization techniques for exoplanet detection.

Additional Information

© 2005 American Astronomical Society. Received 2005 February 25; accepted 2005 June 7; published 2005 July 5. We are grateful for the referee, A. Greenaway, and F. H. P. Spaan for useful discussions and suggestions, especially concerning chromatic smearing. P. R. also acknowledges the financial support of the Belgian fund "Pôle d'Attraction Inter-universitaire (PAI)."

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