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.

Bildnachweis:

ESO

Über das Bild

ID:eso0111d
Typ:Zusammenstellung
Veröffentlichungsdatum:18. März 2001
Dazugehörige Veröffentlichungen:eso0111
Größe:2940 x 1728 px

Über das Objekt

Name:Alphard, Sirius
Typ:Milky Way : Star
Kategorie:Stars

Bildformate

Großes JPEG
296,6 KB