File:A Deep Look into a Dark Sky.jpg
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摘要
描述A Deep Look into a Dark Sky.jpg |
English: Can you count the number of bright dots in this picture? This crowded frame is a deep-field image obtained using the Wide Field Imager (WFI), a camera mounted on a relatively modestly sized telescope, the MPG/ESO 2.2-metre located at the La Silla Observatory, Chile.
This image is one of five patches of sky covered by the COMBO-17 survey (Classifying Objects by Medium-Band Observations in 17 filters), a deep search for cosmic objects in a relatively narrow area of the southern hemisphere's sky. Each one of the five patches is recorded using 17 individual colour filters. Each one of the five COMBO-17 images covers an area of the sky the size of the full Moon. The survey has already revealed thousands of previously unknown cosmic specimens — over 25 000 galaxies, tens of thousands of distant stars and quasars previously hidden from our view, showing just how much we still have to learn about the Universe. Some of the most distant flecks of light visible in this photo are galaxies whose light has been travelling for nine or ten billion years before reaching to us. By studying galaxies of different ages astronomers can understand how they evolve in time, from mature nearby galaxies similar to our galaxy, the Milky Way, to young ones in the distant Universe that reveal what the cosmos was like in its infancy. |
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來源 | http://www.eso.org/public/images/potw1428a/ |
作者 | ESO |
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此檔案採用創用CC 姓名標示 4.0 國際授權條款。
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創用CC姓名標示4.0國際 繁體中文 (已轉換拼寫)
14 7 2014
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目前 | 2014年8月1日 (五) 05:36 | 4,000 × 3,811(9.53 MB) | Jmencisom | User created page with UploadWizard |
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來源 | European Southern Observatory |
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製作/提供者 | ESO |
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簡稱 |
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資料產生的日期時間 | 2014年7月14日 (一) 10:00 |
關鍵字 | COMBO-17 survey |
聯絡資訊 |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM 版本 | 4 |