3 AT
3 ATs

來源:Yuri Beletsky|發表日期:2024-05-04
儘管這三個機器人與 R 2 D 2 非常相似,但它們並不是你要找的機器人。它們是智利阿塔卡馬沙漠地區帕拉納爾天文臺的 1 . 8 米輔助望遠鏡(AT)。輔助望遠鏡的設計目的是與天文臺的 8 米超大望遠鏡裝置配合使用,進行干涉測量,這是一種實現極高解析度觀測的技術。目前共有四臺 AT 在執行,每臺 AT 都配有一個運輸裝置,可以沿著軌道移動望遠鏡,從而與大型單元望遠鏡形成不同的陣列。作為干涉儀,每臺望遠鏡的光線透過地下隧道中的反射鏡系統匯聚到一個共同的焦點上。在這三個 AT 的上方,大麥哲倫雲和小麥哲倫雲是我們銀河系遙遠的衛星星系。在晴朗而黑暗的南部天空中,地球的綠色大氣層氣流沿著地平線微弱地延伸著。
原文:Despite their resemblance to R2D2, these three are not the droids you're looking for. Instead, the enclosures house 1.8 meter Auxiliary Telescopes (ATs) at Paranal Observatory in the Atacama Desert region of Chile. The ATs are designed to be used for interferometry, a technique for achieving extremely high resolution observations, in concert with the observatory's 8 meter Very Large Telescope units. A total of four ATs are operational, each fitted with a transporter that moves the telescope along a track allowing different arrays with the large unit telescopes. To work as an interferometer, the light from each telescope is brought to a common focal point by a system of mirrors in underground tunnels. Above these three ATs, the Large and Small Magellanic Clouds are the far, far away satellite galaxies of our own Milky Way. In the clear and otherwise dark southern skies, planet Earth's greenish atmospheric airglow stretches faintly along the horizon.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
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