File:Laser Guide Star in Paranal (dsc 2970-final).jpg
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[edit]DescriptionLaser Guide Star in Paranal (dsc 2970-final).jpg |
English: The night sky is full of stars, but there are other astronomical objects visible in this picture taken at Paranal Observatory. The pinkish nebula at the very bottom on the left is the Carina nebula. Further up, there is a bluish bright star: it is Canopus, the second-brightest star in the night sky. Over to the right of Canopus, the two bluish clouds of the Large and Small Magellanic Clouds, two irregular neighbouring galaxies of the Milky Way, can be seen. To observe these and other celestial objects in greater detail, the biggest barrier for ground-based telescopes is the turbulence of Earth’s atmosphere, which makes astronomical images blurry. But the ESO’s Very Large Telescope’s (VLT) adaptive-optics system can solve this issue, and the lasers of the Laser Guide Stars Facility installed on the VLT’s Unit Telescope 4 play a key role. These lasers excite the sodium atoms in the atmosphere, which in turn emit light that is affected by the irregular air motions in the same way as the light from stars. The light is collected by the telescope and can be used by the VLT’s adaptive-optics system to measure the distortions introduced by the atmosphere and then to correct for them. |
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Date | 31 May 2023, 14:17 (upload date) | ||
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Author | ESO | ||
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Licensing
[edit]This media was created by the European Southern Observatory (ESO).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 03:02, 1 June 2023 | 5,802 × 3,599 (9.21 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.eso.org/images/large/dsc_2970-final.jpg via Commons:Spacemedia |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Author | LUIS CALCADA |
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ISO speed rating | 8,000 |
Date and time of data generation | 04:59, 20 November 2022 |
Credit/Provider | ESO |
Source | European Southern Observatory |
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Software used | NIKON Z 6_2 Ver.01.40 |
File change date and time | 14:21, 9 May 2023 |
Serial number of camera | 6033047 |
Lens used | 14-24mm f/2.8G |
Date and time of digitizing | 04:59, 20 November 2022 |
Rating (out of 5) | 0 |
Date metadata was last modified | 16:21, 9 May 2023 |
Unique ID of original document | 7E643DA7ABE541DDF6C7F2686E9BE947 |
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Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany |
IIM version | 4 |