As in Fig. 2 but for galaxy PEG J232023+081331.4. In this case, the size of the frames in the upper panels is 52 × 52 arcsec. There seems to be an extremely faint, low-surface-brightness structure connected to the galaxy (white arrow). 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 larger photometric errors.