File:VLT- then vs now (potw2321a).jpg
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DescriptionVLT- then vs now (potw2321a).jpg |
English: A lot can change in more than two decades — just take a look at these pictures of ESO’s Very Large Telescope (VLT)! On the left we see the VLT when it was still under construction atop Cerro Paranal in Chile, while on the right we see it in all its glory as it stands today. Before building the telescopes themselves the mountain had to be lowered by 28 metres to create the telescope platform, which meant removing some 350 000 cubic metres of rock. Then in 1998 the Unit Telescope UT1 (Antu), the leftmost telescope and the furthest along in its construction in the “then” picture, captured its first image of the cosmos — 25 years ago this week. Today, the VLT consists of four Unit Telescopes with main mirrors of 8.2 metres diameter and four movable 1.8-metre diameter Auxiliary Telescopes.After a quarter of a century of observations, the VLT remains one of the world’s most advanced optical/infrared telescopes and is continuing to make key discoveries, and it’s being upgraded to help it pursue its mission to uncover the secrets of the Universe. These upgrades will ensure the VLT maintains its position at the forefront of science and engineering for years to come. Happy Birthday VLT! |
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Date | 22 May 2023 (upload date) | ||
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Author | ESO | ||
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This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 03:00, 23 May 2023 | 4,800 × 1,665 (2.25 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.eso.org/images/large/potw2321a.jpg via Commons:Spacemedia |
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Credit/Provider | ESO |
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Source | European Southern Observatory |
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Date and time of data generation | 06:00, 22 May 2023 |
JPEG file comment | This aerial photo was obtained on 16 January 1996 and shows the progression of the work at the VLT Observatory on Cerro Paranal in the Chilean Atacama desert, about 130 km south of the town of Antofagasta. The control building is seen at the left side of the mountain. The enclosure for VLT Unit Telescope no. 1 is almost ready to receive the outer cladding and the work on the other three enclosures and their foundations is also well advanced. The building for the interferometric laboratory is seen at the centre of the platform and the adjoining tunnels are ready and covered. Some temporary workshops are seen in the front. The direction of view is towards South-West and the clouds in the background are situated over the lower terrain near the coast and over the Pacific Ocean. |
File change date and time | 09:24, 18 May 2023 |
Date metadata was last modified | 11:24, 18 May 2023 |
Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany |
Keywords | Very Large Telescope |
IIM version | 4 |