M87: the posterior mean image by Bayesian self-calibration (top), the self-calibrated CLEAN image (middle) and the over-resolved CLEAN image (bottom) reconstructed from the same a-priori calibrated visibility data of VLBA observations at 43 GHz. The unified color bar shows an intensity range from the minimum intensity up to the maximum intensity of the resolve image. The image obtained by the Bayesian approach has a maximum intensity I_max = 35 Jy mas⁻² with a minimum value of I_min = 8 µJy mas⁻². The CLEAN image (middle) restoring beam shown in the lower-left corner of the plot is 0.5 × 0.2 mas, P.A. = −11°. The maximum intensity of the CLEAN reconstruction is I_max = 6 Jy mas⁻². The over-resolved CLEAN image (bottom) circular restoring beam shown in the lower-left corner of the plot is 0.18 mas. The maximum intensity of the over-resolved CLEAN image is I_peak = 13 Jy mas⁻².