昴宿星图
(原标题: Pic du Pleiades)
2023-12-09
浏览次数: 15
11月19日黎明时分，昴宿星团矗立在法国比利牛斯山脉上空漆黑的天空中。但就在日出之前，这张3秒曝光的照片捕捉到了一个偶然的时刻；一条明亮的流星雨划过了银河星团的中心。从相机的角度来看，星团和流星就在比戈尔峰山顶天文台的正上方。虽然天文学家可能会认为昴星团离我们相对较近，但当它穿过地球的高层大气时，这粒蒸发的尘埃实际上与昴星团紧密聚集的年轻恒星群相距约400光年。在拍摄夜空延时系列时，相机和长焦镜头被固定在环法自行车赛斜坡上的三脚架上，距离Pic du Midi约5公里。
查看原文解释
Near dawn on November 19 the Pleiades stood in still dark skies over the French Pyrenees. But just before sunrise a serendipitous moment was captured in this single 3 second exposure; a bright meteor streak appeared to pierce the heart of the galactic star cluster. From the camera's perspective, star cluster and meteor were poised directly above the mountain top observatory on the Pic du Midi de Bigorre. And though astronomers might consider the Pleiades to be relatively close by, the grain of dust vaporizing as it plowed through planet Earth's upper atmosphere actually missed the cluster's tight grouping of young stars by about 400 light-years. While recording a night sky timelapse series, the camera and telephoto lens were fixed to a tripod on the Tour-de-France-cycled slopes of the Col du Tourmalet about 5 kilometers from the Pic du Midi.
© Jean-Francois Graffand