從杜德爾門看英仙座流星群
Perseid Meteors from Durdle Door
來源：Josh Dury｜發表日期：2025-08-20
天空中那些彎曲的弧線是什麼？流星--特別是今年英仙座流星雨的流星。 在過去幾周裡，天空變暗後，我們分別捕捉到了許多英仙座流星雨的影像，並將它們合併到之前拍攝的一個畫面中。 雖然這些流星都是沿著筆直的軌跡飛行，但在捕捉相機的廣角鏡頭下，這些軌跡顯得有些彎曲。 流星條紋都可以追溯到天空中一個叫做輻射體的點，這裡的輻射體就在畫面上方的英仙座。同一臺相機還拍攝了背景天空的深層影像，使銀河系的中央帶幾乎垂直穿過特寫影像的中心。前景中的石灰岩拱門位於英格蘭多塞特郡，被稱為 "Durdle Door"，這個名字據說是一千年前留下的。
原文：What are those curved arcs in the sky? Meteors -- specifically, meteors from this year's Perseid meteor shower. Over the past few weeks, after the sky darkened, many images of Perseid meteors were captured separately and merged into a single frame, taken earlier. Although the meteors all traveled on straight paths, these paths appear slightly curved by the wide-angle lens of the capturing camera. The meteor streaks can all be traced back to a single point on the sky called the radiant, here just off the top of the frame in the constellation of Perseus. The same camera took a deep image of the background sky that brought up the central band of our Milky Way galaxy running nearly vertically through the featured image's center. The limestone arch in the foreground in Dorset, England is known as Durdle Door, a name thought to survive from a thousand years ago.
※ 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！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。