The technique of diagnosing the properties of two or more waves by studying the pattern of interference, which is the superposition of two or more waves that results in a new wave pattern. Astronomers use this technique to combine the signals from two or more telescopes to produce images that are much sharper than those obtained by a single telescope. The technique is most often applied to radio astronomy, in which up to 30 or more radio dishes are combined into a single array. Optical interferometers, which are more difficult to align and operate, are also becoming more common.

Radio Programs

Interferometry III Adding up the telescopes Wednesday, February 10, 2016
Interferometry II Sharpening the view of the stars Tuesday, February 9, 2016
Interferometry Taking the measure of a giant Monday, February 8, 2016
Sheratan The hidden nature of a binary star Sunday, October 25, 2015
Groombridge 1830 An interloper from a distant realm Sunday, March 31, 2013


©2015 The University of Texas McDonald Observatory