Comparison between the SPHERE reduction pipeline (RP, Delorme et al. 2017) (a,c,e) and the proposed method (PIC) (b,d,f) on the Jovian moon Ganymede (square stretch of the intensity, colour bar: arbitrary unit). a,b: coloured projection ⟨x⟩_λ of the reconstructed hyperspectral cube (square stretch of the intensity). c–f: slices of the reconstructed hyperspectral cube (at λ = 1018 nm and λ = 1556 nm). g: spectra extracted from the reduced hyperspectral cubes at the circled positions. The two vertical dashed lines indicate the wavelengths of the monochromatic images shown in (c–f).