Yepun's lasers ignore the clouds

As the clouds rush by in this timelapse video, we see the four lasers attached to Yepun, one of the four telescopes making up ESO's Very Large Telescope, beaming up through the clouds and high into the atmosphere. There they excite atoms of sodium, producing a bright spot known as an artificial star. Astronomers use this artificial star to track the turbulence in the atmosphere that causes images of celestial objects to become blurred. They then adjust a flexible mirror within the telescope's adaptive optics systems to compensate for the blurring and so produce much sharper images.

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ESO/F. Kamphues

Om videon

ID:eso1613c
Publiceringsdatum:27 april 2016 11:00
Relaterade pressmeddelanden:eso1613
Speltid:10 s
Frame rate:30 fps

Om objektet

Namn:Laser Guide Star, VLT Unit Telescopes
Typ:Unspecified : Technology : Observatory : Telescope
Kategori:Paranal

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