Fig. 1.

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Overview of the available imaging data and the inferred smooth mass macro model. Top: Pan-STARRS gri image, with the lensed images labeled and the two EFOSC2 slit positions used for the discovery spectra, followed by the VLASS radio map and the CFHT optical images. The last panel shows a deconvolution of the CFHT image with STARRED (see text). The two central images are overlaid with markers of area proportional to the predicted relative magnifications from our smooth mass macro model of the lens. Bottom: mass model constrained using only the astrometry of the lensed images as derived with the CFHT data. A zoom on the point source position and the caustic in the source plane is shown on the second panel. The VHS yJK image is shown on the third panel, followed by its STARRED deconvolution showing a noticeable dimming of the merging pair with wavelength in the near-IR when compared to the optical imaging.
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