Simulated images of an unresolved source with the same observational characteristics (position, roll angle, exposure time and observation date) of the merged image of the Spiderweb Galaxy, in the 0.5–2 keV (left) and 2–7 keV (right) band. The inner red circle (2 arcsec radius) is used to extract the AGN spectrum, while the outer green circle (12 arcsec radius) encompasses the diffuse emission. The color scale is the same on both bands.