Flux comparison of the J-spectra of different apertures of the galaxy 2470-10239 before and after applying the PSF homogenisation for different apertures. From left to right: R<0.25 R_EFF, 0.25 R_EFF<R<0.5 R_EFF, and 1.5 R_EFF<R<2 R_EFF. Red points represent the J-spectra obtained with the images prior to PSF homogenisation. Black point represent the J-spectra after all the images have been degraded to the worst PSF.