Computer Science – Performance
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725307l&link_type=abstract
American Astronomical Society, AAS Meeting #217, #253.07; Bulletin of the American Astronomical Society, Vol. 43, 2011
Computer Science
Performance
Scientific paper
Starshades are a new concept to allow direct imaging and spectroscopy of terrestrial extrasolar planets around nearby stars. Diffraction around the apodized starshade suppresses light from the target star by more than 10 orders of magnitude, allowing observations of faint planets nearby. The large size of the starshade (10's of meters
in diameter) and low level of residual starlight present a challenge in calculating the performance of the starshade design. We present a highly accurate and efficient method for evaluation of the diffraction performance of the starshade: our algorithm can produce the exceedingly accurate intensity values needed for starshade design, for tens of thousands of points in the observation region, in a matter of seconds in a present-day single processor computer. We then apply this method to show how the starshade performance is related to its design and to derive a specific starshade design for the New Worlds Observer mission concept.
Bruno O.
Chaubell J.
Glassman Tiffany
Hoch D.
Johnson Adrian
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