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Fig. 2

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Results of aligning all the images of HE1104-1805 (first row), HE2149-2745 (second row) and Q2237+0305 (third row) in the R (left column) and V (right column) band. We show the dispersion σ (see Eq. (2)) i.e. the standard deviation of all star position distances in mas between an aligned image and the reference image for all aligned images without (blue) and with (red) our new method using Gaia proper motion data. The improvement of the median dispersion over all images is shown as well.

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