Comparison of real HRI_EUV image taken on 30 May, 2020 (left), simulated one calculated using DEM (middle), and AIA 171 Å image re-projected to HRI_EUV pixel grid and re-normalized (right). The DEM was obtained using six channels - 94, 131, 171, 193, 211, and 335 Å - of the AIA telescope; then, the DEM was multiplied by G_HRI(T). The resulting image was re-projected to the HRI_EUV pixel grid, and finally the additional empirical coefficient k = 1.7 was used. For the AIA 171 Å, a coefficient k = 5.5 was used. An animated comparison is available online.