File:The VLT in Action.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(4,134 × 4,134 pixels, file size: 5.61 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
English: The ESO Very Large Telescope (VLT) during observations. In this picture, taken from the VLT platform looking north-northwest at twilight, the four 8.2-metre Unit Telescopes (UTs) are visible. From left to right, Antu, Kueyen, Melipal and Yepun, the Mapuche names for the VLT's giant telescopes. In front of the UTs are the four 1.8-metre Auxiliary Telescopes (ATs), entirely dedicated to interferometry, a technique which allows astronomers to see details up to 25 times finer than with the individual telescopes. The configuration of the ATs can be changed by moving them across the platform between 30 different observing positions. One of these positions is visible in the foreground, covered by a hexagonal pad. A reddish laser beam is being launched from UT4 (Yepun) to create an artificial star at an altitude of 90 km in the Earth´s mesosphere. This Laser Guide Star (LGS) is part of the Adaptive Optics system, which allows astronomers to remove the effects of atmospheric turbulence, producing images almost as sharp as if the telescope were in space. The bluish compact group of stars visible to the right of the laser beam is the Pleiades open cluster.
Date (released)
Source http://www.eso.org/public/images/vlt-brunier-nuit/
Author ESO/S. Brunier

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.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:43, 15 October 2012Thumbnail for version as of 14:43, 15 October 20124,134 × 4,134 (5.61 MB)Stas1995 (talk | contribs)
14:42, 15 October 2012Thumbnail for version as of 14:42, 15 October 20124,000 × 4,000 (7.74 MB)Stas1995 (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

The following 2 pages use this file:

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.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:The_VLT_in_Action.jpg&oldid=523914757"