Interferometry is a method of measurement using the phenomenon of interference of waves (e.g. light, radio or sound waves). The measurements may include those of certain wave characteristics and the materials to which the waves interact with.
For astronomy, an interferometer is an array of separate telescopes, mirror segments or radio telescope antennas that work in synergism as a single telescope to provide higher resolution images of astronomical objects such as stars and galaxies.
It plays an important role especially during image production because it can produce images with angular resolution of a big telescope with an aperture equal to that separation between the component telescopes. With such ability, it can come up with a finer resolution of luminous astronomical objects.
