Alignment of a terrestrial planet finder starshade at 20-100 megameters

Details Alignment of a terrestrial planet finder starshade at 20-100 megameters Alignment of a terrestrial planet finder starshade at 20-100 megameters

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007spie.6693e...6n&link_type=abstract

Techniques and Instrumentation for Detection of Exoplanets III. Edited by Coulter, Daniel R. Proceedings of the SPIE, Volume 66

Computer Science

1

Scientific paper

For a planet-finding external occulter system applicable to Terrestrial Planet Finder, acquiring and maintaining collinearity of the telescope, occulter (starshade), and star can be a substantial challenge. The principal difficulty is the angular sensitivity and accuracy, and the telescope-starshade distance (20-100 megameters) is a significant complication. We discuss some sensor concepts as well as operations that support initial acquisition of a star, observations, slewing, and reacquisition. Among these concepts is one so simple that we can argue there is no enabling required in the alignment area.

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