Optical design for Terrestrial Planet Finder

Details Optical design for Terrestrial Planet Finder Optical design for Terrestrial Planet Finder

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3779...40n&link_type=abstract

Proc. SPIE Vol. 3779, p. 40-46, Current Developments in Optical Design and Optical Engineering VIII, Robert E. Fischer; Warren J

Physics

Scientific paper

We describe the features of the optical system for Terrestrial Planet Finder, a space-based, cryogenic interferometer for direct detection of Earth-type planets around nearby stars. Destructive interference in a stellar interferometer suppresses stellar glare by a factor of several thousand or more, and phase chopping distinguishes planet light from symmetric backgrounds. The mid-IR is favorable for detecting planetary emission relative to that from the star, and this spectral region also offers important molecular signatures indicative of key atmospheric gases.

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