Interferometric observations: Fringes from two stars of different angular size
Demonstrates in a schematic way, how the images of two stars of different angular size (left) will look like, with a single telescope (middle) and with an interferometer like the VLTI (right). Whereas there is little difference with one telescope, the fringe patterns at the interferometer are quite different. Conversely, the appearance of this pattern provides a measure of the star's angular diameter.
About the Image
|Release date:||18 March 2001|
|Size:||2940 x 1728 px|