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Lasers in the night
ESO's Very Large Telescope (VLT) counteracts the blurriness of stars caused by the atmosphere through use of the 4 Laser Guide Star Facility (4LGSF). The 4LGSF sends four laser beams into the skies to produce four artificial stars by exciting sodium atoms located in the atmosphere at an altitude of 90 kilometres. These stars act as reference points to artificially remove the twinkling of stars.
Crédit:G. Brammer/ESO
À propos de l'image
Identification: | UT4_4LGSF_GBr-CC |
Type: | Photographique |
Date de publication: | 5 décembre 2018 18:24 |
Taille: | 2508 x 4584 px |
À propos de l'objet
Nom: | Very Large Telescope |
Type: | Unspecified : Technology : Observatory : Instrument Unspecified : Technology : Observatory : Facility Unspecified : Technology : Observatory |
Catégorie: | Paranal |
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