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Proceedings Paper

SIM interferometer testbed (SCDU) status and recent results
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Paper 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.

Paper Details

Date Published: 22 July 2010
PDF: 8 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77341N (22 July 2010); doi: 10.1117/12.856300
Show Author Affiliations
Bijan Nemati, Jet Propulsion Lab. (United States)
Xin An, Jet Propulsion Lab. (United States)
Renaud Goullioud, Jet Propulsion Lab. (United States)
Michael Shao, Jet Propulsion Lab. (United States)
Tsae-Pyng Shen, Jet Propulsion Lab. (United States)
Udo J. Wehmeier, Jet Propulsion Lab. (United States)
Mark A. Weilert, Jet Propulsion Lab. (United States)
Xu Wang, Jet Propulsion Lab. (United States)
Thomas A. Werne, Jet Propulsion Lab. (United States)
Janet P. Wu, Jet Propulsion Lab. (United States)
Chengxing Zhai, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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