Laser beam creating an “artificial” star

A laser beam shoots out of Yepun, the fourth Unit Telescope of Europe’s flagship observatory, ESO’s Very Large Telescope (VLT). This beam is used to create an artificial star above Paranal to assist the adaptive optics instruments on the VLT. 

Adaptive optics is a technique that allows astronomers to overcome the blurring effect of the atmosphere and obtain images almost as sharp as would be possible if the whole telescope were placed in space, above Earth's atmosphere.

Crédit:

À propos de l'image

Identification:yb_lgs_beam_8852_cc
Type:Photographique
Date de publication:3 décembre 2009 23:19
Taille:2000 x 3000 px

À propos de l'objet

Nom:Very Large Telescope
Type:Unspecified : Technology : Observatory : Telescope
Catégorie:Paranal

Formats des images

Grand JPEG
1,4 Mio
JPEG taille écran
442,8 Kio

Fonds d'écran

1024x768
284,1 Kio
1280x1024
434,7 Kio
1600x1200
597,6 Kio
1920x1200
710,1 Kio
2048x1536
820,9 Kio