"First Fringes" with two ATs

The "First Fringes" obtained with the first two VLTI Auxiliary Telescopes, as seen on the computer screen during the observation. The fringe pattern arises when the light beams from the two 1.8-m telescopes are brought together inside the VINCI instrument. The pattern itself contains information about the angular extension of the observed object, here the 6th-magnitude star HD62082. The fringes are acquired by moving a mirror back and forth around the position of equal path length for the two telescopes. One such scan can be seen in the third row window. This pattern results from the raw interferometric signals (the last two rows) after calibration and filtering using the photometric signals (the 4th and 5th row). The first two rows show the spectrum of the fringe pattern signal.

Crédit:

ESO

À propos de l'image

Identification:eso0508e
Type:Observation
Date de publication:14 mars 2005
Communiqués de presse en rapport:eso0508
Taille:812 x 1024 px

À propos de l'objet

Nom:HD62082, Spectrum
Type:Milky Way : Star : Type : Variable
Catégorie:Stars

Formats des images

Grand JPEG
222,2 Kio
JPEG taille écran
355,6 Kio

Couleurs & filtres

DomaineTélescope
Infrarouge
K
Very Large Telescope Interferometer
VINCI