On optimal geometry for space interferometers

This paper examines options for orbit configurations a space interferometer. In contrast to previously presented concepts very long baseline interferometry, we propose combination of regular and retrograde near-Earth circular orbits in order achieve faster filling (u,v) coverage. With the rapid relative motion telescopes, it will be possible quickly obtain high quality images supermassive black holes. As result such an approach, first time conduct studies hole close surroundings dynamics.