Other
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21915509c&link_type=abstract
American Astronomical Society, AAS Meeting #219, #155.09
Other
Scientific paper
The use of an external occulter has been proposed as one method for the direct detection and spectral characterization of terrestrial planets around other stars, a key goal identified in ASTRO2010. Because of the observational geometry, one of the concerns is stray light from the edge of the occulter that is scattered into the line of sight of the telescope. We have developed a stray light model using physical properties of a realizable occulter edge geometry and material to calculate the resulting stray light. The background signal due to stray light has been calculated for the two telescope architectures adopted for study by the Exoplanet Exploration Program Analysis Group (ExoPAG), a 4 m monolithic and an 8 m segmented mirror design. Comparing the stray light results to the estimated signal levels, we have derived requirements for the occulter edge geometry to meet the sensitivity limits in each of these system configurations.
Casement Lyla Suzanne
Flannery Martin R.
Glassman Tiffany Michelle
Lo Amy S.
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