Computer Science – Performance
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542118s&link_type=abstract
American Astronomical Society, AAS Meeting #215, #421.18; Bulletin of the American Astronomical Society, Vol. 42, p.289
Computer Science
Performance
Scientific paper
A starshade is an external occulter that flies tens of thousands of kilometers in front of a space telescope, along the line-of-sight to a star. A starshade blocks starlight before it enters the telescope, mitigating diffraction, and making Earth-like planets observable. The starshade testbed at Northrop Grumman Aerospace Systems (NGAS) is capable of testing the performance of sub-scale starshades in mission-similar configurations. Thus far at NGAS, starshades have suppressed a simulated star to the 10-7 contrast level or better across a broad white light bandpass. The goal of the testbed has been deep starlight suppression, but it is also important to understand starshade sensitivity to shape deformations. The purpose of this poster is to summarize our approach and initial results of assessing the impact of starshade shape flaws on performance using the testbed. We are working toward a convergence of experimental results and theoretical predictions.
Glassman Tiffany
Johnson Adam M. F.
Samuele Rocco
Shipley Ann
Varshneya Rupal
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