Fig. 1
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Optical images of the four discoverable WSLQs. From left to right: SDSS J1004+4112, SDSS J1029+2623, SDSS J1326+4806, and GraL J165105.3-041725. Quasar images included in CatNorth are marked with white circles. The quasar images that belong to known WSLQ systems but are not included in CatNorth are marked as red circles (we only plot the non-odd image). The images of the first three panels are from DESI Legacy Imaging Surveys DR9, and the rightmost panel is from Pan-STARRS1. (Orientation: north is up, south is down, west is left, and east is right; same hereafter).
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