银河说-每日一图171213期：划过内蒙古的流星

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划过内蒙古的流星

你有过置身于流星雨中的经历吗？如果有过，就会注意到流星雨发生期间大约每隔一分钟，天空就会随着疾驰而过的闪光突然明亮起来。这幅图正是展现了在去年英仙座流星雨期间，一位天文摄影者被流星雨包围的亲身经历。在这段长达三个小时的流星雨主题拍摄过程中，大约有90颗英仙座流星，从中国、内蒙古的多伦湖上空掠过。如果你追溯这些流星的坠落轨迹，你会发现她们大部分都好像从一个星座中出发（例如，在此案例中的起点是英仙座）。事实上，你甚至可以区分哪些流星并非来自英仙座，因为她们的坠落轨迹明显不同。今晚预计是又一个沐浴流星雨的好时机，因为现在是双子座流星雨发生的高峰期。作为流星雨的辐射点，双子座将在日落不久后升起，并且几乎整晚都可以被人看到。

译：银河说翻译组  雪洋洋

Meteors over Inner Mongolia
Image Credit & Copyright: Haitong Yu

Explanation: Did you ever get caught in a meteor shower? If yes, then every minute or so the sky sparked with fleeting flashes of light. This was the fate of the pictured astrophotographer during last year’s Perseids meteor shower. During the featured three-hour image composite, about 90 Perseids rained down above Lake Duolun of Inner Mongolia, China. If you trace back the meteor streaks, you will find that most of them appear to radiate from a single constellation — in this case Perseus. In fact, you can even tell which meteors are not Perseids because they track differently. Tonight promises to be another good night to get caught in a meteor shower because it is the peak for the Geminids. Gemini, the shower radiant, should rise shortly after sunset and be visible most of the night.

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星陨如小雨。

这是站在水里还是冰面上拍的

jupiter1186 发表于 2017-12-31 12:07
这是站在水里还是冰面上拍的

可能是结冰后站在冰面上拍的 还可能是结冰后冰面上又下了一层小雨，之前见过几组这样的作品，效果更好