From left to right: original LRI (a portion of GOODS-South observed with IRAC at 3.6 μm, mosaic by R. McLure); residual after standard fitting using a single convolution kernel; residual after fitting using a different individual kernel for each source (Sect. 2.2), tailored on the basis of the positional angles of the pointings used to build the mosaic (global background subtraction has also been applied, see Sect. 2.1); residual after including the individual kernel registration (Sect. 2.3; in the last two panels, blue boxes highlight regions where the improvement using this technique is evident).