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.

Crédit:

ESO

À propos de l'image

Identification:eso0111d
Type:Collage
Date de publication:18 mars 2001
Communiqués de presse en rapport:eso0111
Taille:2940 x 1728 px

À propos de l'objet

Nom:Alphard, Sirius
Type:Milky Way : Star
Catégorie:Stars

Formats des images

Grand JPEG
296,6 Kio