Starshade Scaling Relations

Details Starshade Scaling Relations Starshade Scaling Relations

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21443406g&link_type=abstract

American Astronomical Society, AAS Meeting #214, #434.06; Bulletin of the American Astronomical Society, Vol. 41, p.705

Computer Science

Performance

Scientific paper

The New Worlds Observer enables high-contrast imaging by placing a space telescope in the dark shadow cast by an apodized starshade. Depending on the science requirements, we consider starshades that provide a wide range of contrast (from 1E-4 to more than 1E-15) over an octave of wavelength (from UV to Visible) at a variety of inner working angles (from a few milliarcseconds to several arcseconds). The starshade-telescope system is described by many parameters, including starshade diameter, telescope diameter, starshade-telescope separation, wavelength range, and number of starshade petals, that interact non-linearly. In this paper, we present a simplified method to parameterize the problem that can be used to scale the starshade for a particular set of science requirements. We show how the different parameters contribute to the starshade's performance and illustrate the selection process for a sample of different science requirements.

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