Best identifications from DECaPS2 images, with each field of view measuring 20 × 20 arcsec. The positions of the objects are marked with red ellipses, accounting for the positional uncertainties reported in the literature (see Table 1), except for 4U 1755-338, where we plot our refined coordinates based on the outburst counterpart detected in the NTT images. For the sake of visibility, we mark the radio position of J1803 with red tick marks.