Fig. A.1.

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Stacked signal of six unsaturated stars in the same field in different bands and after coadding all three epochs (for JWST). The stars have been aligned before stacking using steps of 3 mas. In order to better show the sidelobes and diffraction spikes, we plot the logarithm of the stacked signal. The stacked signal is used as a model for the PSF in each filter.
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