萤火虫、流星和银河
(原标题: Fireflies, Meteors, and Milky Way)
2025-08-02
浏览次数: 1462
拍摄于7月29日和7月30日，一系列的曝光记录和堆叠创造了这幅梦幻般的北方夏夜景色。在墨西哥中部的塞拉德Órganos国家公园里，当明亮的银河系在地平线上形成弧线时，许多萤火虫划过前景。在延时图像的左上方，天空中排列着明亮的条纹，这是Delta宝瓶座流星。目前活跃的是，每年一度的三角洲水瓶座流星雨与著名的英仙座流星雨在八月的夜晚重叠。今年八月初的午夜过后，大部分没有月亮的天空非常受深夜天文爱好者的欢迎。你如何分辨三角座流星和英仙座流星？英仙座流星雨的条纹可以追溯到英仙座的一次明显的辐射。三角星座出现在更靠南的宝瓶座，在这幅图的左上方。当然，在北方的夏夜，萤火虫发出的生物荧光也很常见。但是你怎么分辨萤火虫和流星呢？试着抓住一个。
查看原文解释
Taken on July 29 and July 30, a registered and stacked series of exposures creates this dreamlike view of a northern summer night. Multiple firefly flashes streak across the foreground as the luminous Milky Way arcs above the horizon in the Sierra de Órganos national park of central Mexico. The collection of bright streaks aligned across the sky toward the upper left in the timelapse image are Delta Aquariid meteors. Currently active, the annual Delta Aquariid meteor shower shares August nights though, overlapping with the better-known Perseid meteor shower. This year that makes post-midnight, mostly moonless skies in early August very popular with late night skygazers. How can you tell a Delta Aquariid from a Perseid meteor? The streaks of Perseid meteors can be traced back to an apparent radiant in the constellation Perseus. Delta Aquariids appear to emerge from the more southerly constellation Aquarius, beyond the top left of this frame. Of course, the bioluminescent flashes of fireflies are common too on these northern summer nights. But how can you tell a firefly from a meteor? Just try to catch one.
© Daniel Korona