File:Unveiling distant stars and galaxies.jpg
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[edit]DescriptionUnveiling distant stars and galaxies.jpg |
English: This frame, scattered with distant stars and galaxies, is a deep-field image taken using the Wide Field Imager (WFI), a camera mounted on the MPG/ESO 2.2-metre telescope located at the La Silla Observatory, Chile.
It was snapped as part of the COMBO-17 survey (Classifying Objects by Medium-Band Observations in 17 filters), a project that imaged five small patches of sky in 17 different coloured optical filters. The total area of sky explored in each of the COMBO-17 fields equates to approximately the same size as the full Moon, and has revealed huge numbers of distant objects — demonstrating just how much is still waiting to be discovered in our skies. The image shows a region that was also investigated as part of the FORS Deep Field (FDF), a project that examined various areas of sky in great detail and depth using the FORS2 spectrograph instrument currently installed on ESO’s Very Large Telescope at the Paranal Observatory, Chile. However, these WFI images used many more filters than previous FDF observations, and looked at bigger patches of sky, resulting in images like the one above. These small glimpses into the Universe have unveiled tens of thousands of distant stars, galaxies, and quasars previously hidden from our view, and have been used to investigate gravitational lensing and the distribution of dark matter in galaxies and clusters.Español: Esta imagen de campo profundo, cargada de estrellas y galaxias distantes, fue obtenida con el instrumento Wide Field Imager (WFI), una cámara instalada en el telescopio MPG/ESO de 2,2 metros, situado en el Observatorio La Silla, en Chile.
Fue tomada como parte del sondeo COMBO-17 (Classifying Objects by Medium-Band Observations in 17 filters), un proyecto que obtenía imágenes de cinco pequeñas zonas del cielo con 17 filtros ópticos de diferentes colores. El área total de cielo explorado en cada uno de los campos de COMBO-17 equivale, aproximadamente, al mismo tamaño que la Luna llena, y ha revelado numerosos objetos distantes — demostrando cuánto nos queda aún por descubrir de nuestros cielos. La zona de la imagen también fue estudiada por otro proyecto, FORS Deep Field (FDF), con el fin de examinar en profundidad varias áreas del cielo con mucho detalle utilizando el instrumento FORS2, un espectrógrafo instalado actualmente en el VLT (Very Large Telescope) de ESO en el Observatorio Paranal (Chile). Sin embargo, las imágenes de WFI utilizaban muchos más filtros que las obtenidas previamente por FDF y estudiaban zonas más amplias del cielo, obteniendo como resultado imágenes como las que les mostramos. Estos pequeños vistazos al universo han revelado decenas de miles de estrellas distantes, galaxias y cuásares ocultos antes a nuestros ojos, y se han utilizado para investigar las lentes gravitacionales y la distribución de la materia oscura en galaxias y cúmulos. |
Date | |
Source | http://www.eso.org/public/images/potw1339a/ |
Author | ESO |
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. | |
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Online copyright statement | |
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Credit/Provider | ESO |
Source | European Southern Observatory |
Usage terms |
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Image title |
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Date and time of data generation | 10:00, 30 September 2013 |
Copyright status | Copyright status not set |
Keywords | FORS Deep Field |
Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |