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Fig. 4


95-percentile relative errors of the PSF shape parameters e1 and the size. The relative errors in e2 are about twice smaller. The values of the relative errors are given in the colour bar for the ellipticity (top number) and for the size (bottom number). The magnitude selection is 18 ≤ I(AB) ≤ 24.5. The distributions of relative errors contain all binaries that have at most an angular separation on the x-axis and at minimum a contrast on the y-axis.

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