Infrared spaceborne rotating rotational-shearing interferometer for extrasolar planet detection

Details Infrared spaceborne rotating rotational-shearing interferometer for extrasolar planet detection Infrared spaceborne rotating rotational-shearing interferometer for extrasolar planet detection

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2268...68s&link_type=abstract

Proc. SPIE Vol. 2268, p. 68-77, Infrared Spaceborne Remote Sensing II, Marija S. Scholl; Ed.

Physics

Scientific paper

We consider the advantages and disadvantages of a rotating and a rotational shearing interferometer for the detection of a planet circling around a nearby star. A rotating, rotational-shearing interferometer is proposed for the detection of a faint object in the vicinity of a very bright object. We derive an expression for the interferometric pattern detected by a rotational shearing interferometer. When the interferometer points at the bright star, the observed fringes are due only to the wavefront originating at the faint planet. A two-aperture interferometric configuration, even though not necessary for the shearing function, is suggested to enhance the stability of a free-flying spaceborne structure.

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