Residuals for J043606.80+242549.5, J164636.12–231337.6, J160412.34–212747.2, and J160539.08–240333.0 in the F850LP filter, obtained using the three methods described in the text. The scale is indicated in the top-left image, with crosshairs marking the detection locations. For comparison, the residuals of an unresolved target (J160417.92–193623.2) are shown in the bottom row. The suspected galaxy is also visible in J164636.12–231337.6 images (see also Fig. 6). The orientation is in native detector coordinates.