Fig. 6
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Proper motion vector field between 2003 and 2009 obtained with the tool POF. The size of the vignette for each tracked feature is 15″. There are 1722 vectors, colored by the value of their norm. The colorbar is saturated at 7000 km s−1. The background image is the observation of Tycho’s SNR in 2003 without any exposure map correction.
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