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SIM Interferometer Testbed (SCDU) Status and Recent ResultsSIM 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.
Document ID
20150008504
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Nemati, Bijan
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
An, Xin
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Goullioud, Renaud
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shao, Michael
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shen, Tsae-Pyng
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wehmeier, Udo J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Weilert, Mark A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wang, Xu
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Werne, Thomas A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wu, Janet P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Zhai, Chengxing
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
June 27, 2010
Subject Category
Astrophysics
Astronomy
Instrumentation And Photography
Meeting Information
Meeting: SPIE Astronomical Telescopes and Instrumentation 2010
Location: San Diego, CA
Country: United States
Start Date: June 27, 2010
End Date: July 2, 2010
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
Dispersion
Astrometry
Spectral

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