Figure 6: Compact setting achievable with a 36-element array of 25m telescopes when maximal interferometric field is needed. The entrance (left) and exit (right) pupils meet the requirements for densified imaging. The resolution stretches from 0.4 millarcsecond, with the minimal 250m diameter of the retracted array (left), to 10 micro-arc-seconds when the array is expanded to 10km.