Oleg Zabluda's blog
Friday, August 24, 2018
 
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ESO’s Very Large Telescope (VLT) has achieved first light with a new adaptive optics mode called laser tomography [...] It is now possible to capture images from the ground at visible wavelengths that are sharper than those from the NASA/ESA Hubble Space Telescope. [...] has two adaptive optics modes — the Wide Field Mode and the Narrow Field Mode.

The MUSE Wide Field Mode coupled to GALACSI in ground-layer mode corrects for the effects of atmospheric turbulence up to one kilometre above the telescope over a comparatively wide field of view. But the new Narrow Field Mode using laser tomography corrects for almost all of the atmospheric turbulence above the telescope [...] over a smaller region of the sky.

With this new capability, the 8-metre UT4 reaches the theoretical limit of image sharpness and is no longer limited by atmospheric blur.
"""
https://www.eso.org/public/usa/news/eso1824/
https://www.eso.org/public/usa/news/eso1824/

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