镜面流星和银河
(原标题: Mirrored Meteor and Milky Way)
2026-09-26
浏览次数: 1533
8月15日，这颗英仙座流星划过位于西班牙加那利群岛拉帕尔马的穆夏乔斯天文台的夜空。这条明亮多彩的流星轨迹是在银河系中心附近拍摄的，银河系的黑暗星际尘埃云和明亮的星光一直延伸到地平线以上。在这个诱人的天体场景的前景是原型大型望远镜（LST-1）直径23米的镜子。LST-1是在创新的切伦科夫望远镜阵列天文台的北半球站点建造的第一架望远镜。LST-1拥有198个六边形反射镜片段和一个大型、高效、像素化的相机，设计用于探测极短的大气可见光闪光。可见光闪光持续大约十亿分之一秒，是由来自宇宙源的高能伽马射线触发的，比如遥远的活动星系和伽马射线暴。当然，在那天晚上，LST-1的一些单独的镜子片段也反映了明亮的英仙座流星的大气闪光。APOD的图片提交邮件已经更改。请参阅：APOD提交。APOD的主要NASA网站正在迁移：从APOD . NASA .gov到science.nasa.gov/apod
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On August 15, this perseid meteor streaked through night skies over the Observatorio del Roque de los Muchachos at La Palma, Canary Islands, Spain. The bright and colorful meteor trail was captured next to the central Milky Way, whose dark interstellar dust clouds and luminous starlight reach above the horizon. In the foreground of this tantalizing celestial scene is the 23 meter diameter mirror of the prototype Large-Sized Telescope (LST-1). LST-1 is the first telescope constructed at the northern hemisphere site of the innovative Cherenkov Telescope Array Observatory. With 198 hexagonal mirror segments and a large, high-efficiency, pixelized camera, LST-1 is designed to detect extremely brief, atmospheric visible light flashes. Lasting about a billionth of a second, the visible light flashes are triggered by energetic gamma-rays from cosmic sources such as distant active galaxies and gamma-ray bursts. Of course, on that night some individual mirror segments of LST-1 also reflected the atmospheric flash of the bright perseid meteor. APOD's email for image submissions has changed. Please see: APOD Submissions. APOD's main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod
© Jeff Dai