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Proceedings Paper

Evaluation of centroiding algorithm error for Nano-JASMINE
Author(s): Takuji Hara; Naoteru Gouda; Taihei Yano; Yoshiyuki Yamada
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Paper Abstract

The Nano-JASMINE mission has been designed to perform absolute astrometric measurements with unprecedented accuracy; the end-of-mission parallax standard error is required to be of the order of 3 milli arc seconds for stars brighter than 7.5 mag in the zw-band(0.6μm-1.0μm) .These requirements set a stringent constraint on the accuracy of the estimation of the location of the stellar image on the CCD for each observation. However each stellar images have individual shape depend on the spectral energy distribution of the star, the CCD properties, and the optics and its associated wave front errors. So it is necessity that the centroiding algorithm performs a high accuracy in any observables. Referring to the study of Gaia, we use LSF fitting method for centroiding algorithm, and investigate systematic error of the algorithm for Nano-JASMINE. Furthermore, we found to improve the algorithm by restricting sample LSF when we use a Principle Component Analysis. We show that centroiding algorithm error decrease after adapted the method.

Paper Details

Date Published: 28 August 2014
PDF: 8 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 914354 (28 August 2014); doi: 10.1117/12.2054850
Show Author Affiliations
Takuji Hara, The Univ. of Tokyo (Japan)
Naoteru Gouda, National Astronomical Observatory of Japan (Japan)
Taihei Yano, National Astronomical Observatory of Japan (Japan)
Yoshiyuki Yamada, Kyoto Univ. (Japan)

Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann Jr.; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

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