Fig. 1
Image of 67P/Churyumov-Gerasimenko on January 30, 2009, acquired with R Johnson filter: a) corrected of flat, bias, and sky background, b) adaptive Laplace filtered, and c) enhanced by the radial renormalization technique. North is up and east to the left. The FOV is 103″ × 103″, meaning 125 000 × 125 000 km at the comet distance.
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