Results of simulated EHT observations of selected model images. Left panels: model images (high resolution in colour scale and EHT resolution with the orange contours) compared with the reference image reconstructed from the actual EHT observations of M 87* obtained on 2017 April 11 (solid white contours). Middle panels: visibility amplitude as a function of telescope pair baseline. The filled circles indicate the actual EHT measurements of M 87*, and the crosses indicate the simulated EHT observations of the model image. The symbol colour indicates the orientation of the telescope pair baseline. Right panels: closure phase as a function of telescope triangle baseline. The symbol colour indicates the telescope triangle indicated by the labels.