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Fig. 6.

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Residual image subtracting the DECaLS i-band surface brightness map from the EuclidIE surface brightness map. The scale gives the residual in mag arcsec−2. Left: Residual image using the original IE image. The extended dark area in the lower part of the image indicates the possible presence of stray light. Right: Residual image using the IE corrected surface brightness map.

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