Upper panel: F814W HST ACS image of the central area of LCDCS 0541, showing the third wavelet pass residuals. White contours correspond to levels starting at 2.5σ and increasing by 0.5σ. Blue ellipses show the classical SExtractor-detected objects (not visible since they are removed by the first two wavelet passes). The image is 1.6 × 1.6 arcmin² wide. Lower panel: same as before using only the 1 orbit exposures. This image is zoomed on the central ICL source. The first white contour is at the 1.5σ level.