"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.

Credit:

ESO

Over de afbeelding

Id:eso0508e
Type:Observatie
Publicatiedatum:14 maart 2005
Gerelateerde berichten:eso0508
Grootte:812 x 1024 px

Over het object

Naam:HD62082, Spectrum
Type:Milky Way : Star : Type : Variable
Categorie:Stars

Image Formats

Grote JPEG
222,2 KB

Kleuren & filters

BandTelescoop
Infrarood
K
Very Large Telescope Interferometer
VINCI