Emanuel Sungging Mumpuni
National Institute of Aeronautics and Space (LAPAN)

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Measurement of Sunspot Proper Motion Using Cross-Correlation Method Clara Yono Yatini; Soshinori Suematsu; Emanuel Sungging Mumpuni
Jurnal Matematika & Sains Vol 8, No 3 (2003)
Publisher : Institut Teknologi Bandung

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Abstract

Cross-correlation method is a technique for determining the vector displacement that maximizes the spatially local cross-correlation between an image and a reference image as a continuous function of the image space. The crosscorrelation is defined as a function of position in the image, within a spatially localized apodization window. This method is applied to measure the proper motion of the sunspot accurately which can be calculated from a series of active region images as a function of time. This method gives a measure of the spot displacement unaffected by the jitter of the telescope.