As in Fig. 2 but for galaxy PEG J232024+081209.0. In this case, the size of the frames in the upper panels is 45 × 45 arcsec. an extremely faint low-surface-brightness structure connected to the galaxy (white arrows). This structure might be evidence of a tidal origin for the galaxy, or of an interaction with a tidal structure. This tidal structure may be affecting the galaxy’s colors. The galaxy is superposed on the dithering pattern of the gaps between the CCDs, resulting in relatively large photometric errors.