File:ALMA at sunset (27811125594).jpg
![File:ALMA at sunset (27811125594).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/6/64/ALMA_at_sunset_%2827811125594%29.jpg/800px-ALMA_at_sunset_%2827811125594%29.jpg?20181105165727)
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[edit]DescriptionALMA at sunset (27811125594).jpg |
ALMA — the Atacama Large Millimeter/submillimeter Array — resides high up in Chile's inhospitable Atacama desert region, where it observes the Universe at wavelengths in between the infra-red and radio regions of the spectrum. Here it is able to see the cold Universe, objects only a few degrees above absolute zero that include the very earliest stages of the formation of stars. It can also see far back into the history of the Universe, seeking out distant galaxies at early stages in their lifetimes. More information: <a href="http://www.eso.org/public/images/ann16050a/" rel="nofollow">www.eso.org/public/images/ann16050a/</a> Credit: ESO/M.Claro |
Date | |
Source | ALMA at sunset |
Author | European Southern Observatory |
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This image was originally posted to Flickr by European Southern Observatory at https://flickr.com/photos/51207680@N04/27811125594 (archive). It was reviewed on 5 November 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 November 2018
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current | 16:57, 5 November 2018 | ![]() | 1,280 × 852 (151 KB) | Jo-Jo Eumerus (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Author | Miguel Claro |
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Credit/Provider | ESO |
Source | European Southern Observatory |
Online copyright statement | www.miguelclaro.com |
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Date and time of data generation | 14:00, 19 July 2016 |
JPEG file comment | After the sunset starts the nautical twilight and the sky assumes a beautiful pallete of blueish and orange colors, giving space to appearing the first stars of the some constelalltions. In the foreground, is also visible one antenna (DV-21) of 12 meters in diameter, pointing to some place of the cold Universe. This are the first tests to experiment the largest configuration that ALMA can support, with antennas spread over distances up to 16 km. The array thus simulates a giant, single telescope much larger than any that could actually be built. In fact, ALMA has a maximum resolution which is even better than that achieved, at visible wavelengths, by the Hubble Space Telescope.
The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical interferometer of radio telescopes in the Atacama desert of northern Chile. Since a high and dry site is crucial to millimeter wavelength operations, the array has been constructed on the Chajnantor plateau at 5,000 meters altitude, near Llano de Chajnantor Observatory and Atacama Pathfinder Experiment. Consisting of 66 12-meter (39 ft), and 7-meter (23 ft) diameter radio telescopes observing at millimeter and submillimeter wavelengths, ALMA is expected to provide insight on star birth during the early universe and detailed imaging of local star and planet formation. ALMA is a single telescope of revolutionary design, composed initially of 66 high-precision antennas, and operating at wavelengths of 0.32 to 3.6 mm. Its main 12-metre array has fifty antennas, 12 metres in diameter, acting together as a single telescope — an interferometer. An additional compact array of four 12-metre and twelve 7-metre antennas complements this. The 66 ALMA antennas can be arranged in different configurations, where the maximum distance between antennas can vary from 150 metres to 16 kilometres, which will give ALMA a powerful variable “zoom”. It will be able to probe the Universe at millimetre and submillimetre wavelengths with unprecedented sensitivity and resolution, with a vision up to ten times sharper than the Hubble Space Telescope, and complementing images made with the VLT Interferometer. Light at these wavelengths comes from vast cold clouds in interstellar space, at temperatures only a few tens of degrees above absolute zero, and from some of the earliest and most distant galaxies in the Universe. Astronomers can use it to study the chemical and physical conditions in molecular clouds — the dense regions of gas and dust where new stars are being born. Often these regions of the Universe are dark and obscured in visible light, but they shine brightly in the millimetre and submillimetre part of the spectrum. ALMA is the most powerful telescope for observing the cool Universe — molecular gas and dust. ALMA will study the building blocks of stars, planetary systems, galaxies and life itself. By providing scientists with detailed images of stars and planets being born in gas clouds near our Solar System, and detecting distant galaxies forming at the edge of the observable Universe, which we see as they were roughly ten billion years ago, it lets astronomers address some of the deepest questions of our cosmic origins. |
Software used | Adobe Photoshop CC 2015.5 (Windows) |
File change date and time | 11:17, 8 July 2016 |
Serial number of camera | 218020007108 |
Lens used | EF24-70mm f/2.8L II USM |
Rating (out of 5) | 0 |
Date and time of digitizing | 20:19, 14 October 2015 |
Date metadata was last modified | 13:17, 8 July 2016 |
Unique ID of original document | 72E0F116406FC965AFEABDD563EBA8CA |
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Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM version | 4 |