The New Worlds Observer: scientific and technical advantages of external occulters

Details The New Worlds Observer: scientific and technical advantages of external occulters The New Worlds Observer: scientific and technical advantages of external occulters

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7010e..53c&link_type=abstract

Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter. Edited by Oschmann, Jacobus M., Jr.; de Graauw, M

Mathematics

Logic

3

Scientific paper

Perhaps the most compelling piece of science and exploration now under discussion for future space missions is the direct study of planets circling other stars. Indirect means have established planets as common in the universe but have given us a limited view of their actual characteristics. Direct observation holds the potential to map entire planetary systems, view newly forming planets, find Earth-like planets and perform photometry to search for major surface features. Direct observations will also enable spectroscopy of exoplanets and the search for evidence of simple life in the universe. Recent advances in the design of external occulters - starshades that block the light from the star while passing exoplanet light - have lowered their cost and improved their performance to the point where we can now envision a New Worlds Observer that is both buildable and affordable with today's technology. In this paper we explore the comparison of scientific capability of external occulters relative to indirect means and to internal coronagraph missions. We conclude that external occulters logically provide the architecture for the next space mission for exoplanet studies.

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