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SIM interferometer testbed (SCDU) status and recent results

Show simple item record Nemati, Bijan An, Xin Goullioud, Renaud Shao, Michael Shen, Tsae-Pyng Wehmeier, Udo J. Weilert, Mark A. Wang, Xu Werne, Thomas A. Wu, Janet P. Zhai, Chengxing 2014-09-18T21:35:53Z 2014-09-18T21:35:53Z 2010-06-27
dc.identifier.citation SPIE Astronomical Telescopes and Instrumentation 2010, San Diego, California, June 27 - July 2, 2010 en_US
dc.identifier.clearanceno 10-2370
dc.description.abstract SIM Lite is a space-borne stellar interferometer capable of searching for Earth-size planets in the habitable zones of nearby stars. This search will require measurement of astrometric angles with sub micro-arcsecond accuracy and optical pathlength differences to 1 picometer by the end of the five-year mission. One of the most significant technical risks in achieving this level of accuracy is from systematic errors that arise from spectral differences between candidate stars and nearby reference stars. The Spectral Calibration Development Unit (SCDU), in operation since 2007, has been used to explore this effect and demonstrate performance meeting SIM goals. In this paper we present the status of this testbed and recent results. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject Astrometry en_US
dc.subject Spectral en_US
dc.subject Dispersion en_US
dc.title SIM interferometer testbed (SCDU) status and recent results en_US
dc.type Preprint en_US

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