Pan-STARRS Lupton-stretched (Lupton et al. 2004) gri views (top) and r+i variability maps (bottom) of the candidates selected for spectroscopic follow-up. Extended variability is still well visible for all the candidates, even though it sometimes barely rises above the noise. Candidates that are found to be false positives are displayed in grey, and the quasar pairs are displayed in white. The variability map of PS J0125−1012 includes an artefact.