Cutouts of ×3″ of the Einstein ring in all bands. Images are sorted from the bluest to the reddest band going left to right and top to bottom. Each image is scaled using a square root function and ZScale intervals to enhance the contrast between the bright lens and the fainter surrounding ring. Contours from the detection image of SOURCEXTRACTOR++ are shown in all images as white lines. The circle with red dotted lines show the location of the nearby UV-bright contaminant discussed in Sect. 2.2 and in Fig. 5. North is up and east is to the left.