Fig. 1.

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Imaging data of HULQ J0002+0239. Left: HSC/Wide PDR2 riz color image of HULQ J0002+0239. The four objects that are lensed-image candidates are denoted from A to D. Right: HSC/Wide PDR2 i-filter image of HULQ J0002+0239. Red contours indicate isophotes, and they are shown for clarity. The yellow circle is of radius 35 centered on the QSO, and the cyan box demonstrates the position of the 1″-wide slit used for the GMOS spectroscopy.
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