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19 November 2003 New pupil masks for high-contrast imaging
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Abstract
Motivated by the desire to image exosolar planets, recent work by us and others has shown that high-contrast imaging can be achieved using specially shaped pupil masks. To date, our masks have been symmetric with respect to a cartesian coordinate system but were not rotationally invariant, thus requiring that one take multiple images at different angles of rotation about the central point in order to obtain high-contrast in all directions. In this talk, we present two new classes of masks that have rotational symmetry and provide high-contrast in all directions with just one image. These masks provide the required 10-10 level of contrast to within 4 λ/Δ of the central point. They are also well-suited for use on ground-based telescopes, and perhaps NGST as well, since they can accommodate central obstructions and associated support spiders.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert J. Vanderbei, N. Jeremy Kasdin, David N. Spergel, and Marc Kuchner "New pupil masks for high-contrast imaging", Proc. SPIE 5170, Techniques and Instrumentation for Detection of Exoplanets, (19 November 2003); https://doi.org/10.1117/12.505307
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