File:Hidden in the Chilean Andes (potw2335a).jpg
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editDescriptionHidden in the Chilean Andes (potw2335a).jpg |
English: The flat panorama of the Chajnantor plateau dominates this Picture of the Week. Situated at an altitude of around 5000 metres in the Chilean Andes, this plateau is one of the driest places on Earth — challenging for humans, but perfect for astronomical observations.This breathtaking landscape is home to the Atacama Pathfinder Experiment (APEX), the white structure down in the centre of the image. Inaugurated in 2005, APEX is a 12-metre diameter radio telescope that studies the cold, dusty and distant Universe, and is operated by ESO on behalf of the Max Planck Institute for Radio Astronomy (MPIfR).Now look ahead, towards the distant brown mountains, and you might be able to make out a bunch of white dots. Those are in fact the 66 high-precision antennas of ALMA, the Atacama Large Millimeter/submillimeter Array, operated by ESO together with its international partners. Like APEX, ALMA’s antennas observe the coldest objects in the Universe, such as vast clouds of gas and dust only a few tens of degrees above absolute zero. But these antennas work together as a single, huge “virtual” antenna, capable of discerning small details.But why build these advanced instruments in a remote place hidden in the Chilean desert? The signals emitted from the coldest sources of the Universe are heavily absorbed by water vapour in the Earth’s atmosphere. That's why APEX and ALMA are located in such a high and dry place: to minimise the amount of water vapour above them and therefore better detect the signals |
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Date | 28 August 2023 (upload date) | ||
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Author | ESO | ||
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editThis 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 | 07:15, 28 August 2023 | 3,840 × 2,160 (2.29 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.eso.org/public/archives/images/large/potw2335a.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, 28 August 2023 |
Software used | Adobe Premiere Pro 2023.0 (Macintosh) |
File change date and time | 15:08, 1 June 2023 |
Unique ID of original document | xmp.did:ad70936f-c27f-42d5-a270-0a189905ae98 |
Date metadata was last modified | 17:08, 1 June 2023 |
Date and time of digitizing | 13:46, 1 June 2023 |
Rating (out of 5) | 0 |
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Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany |
IIM version | 4 |