CCD centroiding analysis for Nano-JASMINE observation data

Yoshito Niwa; Taihei Yano; Hiroshi Araki; Naoteru Gouda; Yukiyasu Kobayashi; Yoshiyuki Yamada; Seiichi Tazawa; Hideo Hanada

doi:10.1117/12.857763

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10 August 2010 CCD centroiding analysis for Nano-JASMINE observation data

Yoshito Niwa, Taihei Yano, Hiroshi Araki, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Seiichi Tazawa, Hideo Hanada

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Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 773141 (2010) https://doi.org/10.1117/12.857763
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Nano-JASMINE is a very small satellite mission for global space astrometry with milli-arcsecond accuracy, which will be launched in 2011. In this mission, centroids of stars in CCD image frames are estimated with sub-pixel accuracy. In order to realize such a high precision centroiding an algorithm utilizing a least square method is employed. One of the advantages is that centroids can be calculated without explicit assumption of the point spread functions of stars. CCD centroiding experiment has been performed to investigate whether this data analysis is available, and centroids of artificial star images on a CCD are determined with a precision of less than 0.001 pixel. This result indicates parallaxes of stars within 300 pc from Sun can be observed in Nano-JASMINE.

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Yoshito Niwa, Taihei Yano, Hiroshi Araki, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Seiichi Tazawa, and Hideo Hanada "CCD centroiding analysis for Nano-JASMINE observation data", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773141 (10 August 2010); https://doi.org/10.1117/12.857763

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