Photo Agency - Astronomy - Space - Nature
> The VLT Laser Guide Star
The VLT Laser Guide Star
author: S.Guisard/Novapix
reference: o-vlt01-00107
Image Size 300 DPI: 19 * 29 cm
A 50 cm wide yellow laser beam is coming out of Yepun, (UT4) of the Very Large Telescope. It is used to create a yellow artificial star at 95 km of altitude which helps the adaptive optics to measure and correct the atmosphere's blurring effect.
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