AAS 205th Meeting, 9-13 January 2005
Session 5 Visible/UV/IR Space Missions and Technology
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[5.15] Adaptive Optics for High-Contrast Imaging

A Giveón, N.J. Kasdin, M.G. Littman, L.A. Pueyo, R.J. Vanderbei (Princeton Univ.)

Conventional adaptive optics methods use phase conjugation based on measurements of the phase aberrations at the pupil plane. The measurements are typically done using a Shack-Hartmann sensor sampling at spatial frequencies determined by the spatial frequency limitations of the deformable mirror. The work presented here shows that the nulling needed for high contrast imaging cannot be achieved using such a methodology. Linear combinations of high frequencies in the aberration at the pupil plane "fold" and appear as low frequency aberrations at the image plane. We present an optimized solution for the shape of the deformable mirror based on the Fourier decomposition of the effective phase aberration.

The author(s) of this abstract have provided an email address for comments about the abstract: agiveon@princeton.edu

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.