The j‐filter finding charts of all the 75 X‐ray sources in the 1 deg² field. Each chart is in size of 2﹩\farcm﹩8 × 2﹩\farcm﹩8; north is up, and east to the left. The different size of circles indicates X‐ray detection error in radius of R = 2 σ + 10^{﹩\arcsec﹩} (Molthagen et al. 1997). "E" denotes empty in the error circle, "V" denotes a visible‐only source, "a"–"h" are individual objects whose data are given in Table 2.