RGB image of the target field in equatorial coordinates at 22 μm, 12 μm, and 3.4 μm, represented as red, green, and blue, respectively. The lengths of the polarization line segments indicate the values of P_V, with 1% polarization equal to the length indicated in the legend. Similarly, the angles of the line segments indicate the PA of the targets, where PA = 0° is north. The symbols indicate the three distance groups of target stars, as depicted in the legend.