螢火蟲、流星和銀河
Fireflies, Meteors, and Milky Way

來源:Daniel Korona|發表日期:2025-08-02
這組照片拍攝於 7 月 29 日和 7 月 30 日,透過登記和疊加系列曝光,呈現出一幅夢幻般的北方夏夜美景。在墨西哥中部的 Sierra de Órganos 國家公園,當發光的銀河在地平線上劃出一道弧線時,多條螢火蟲閃光劃過前景。在延時拍攝的影像中,左上方天空中排列的明亮條紋是三角洲水瓶座流星雨。目前,一年一度的德爾塔水瓶座流星雨與更著名的英仙座流星雨在八月的夜晚重疊,十分活躍。這使得今年 8 月初後半夜大部分無月的天空非常受深夜觀星者的歡迎。如何區分德爾塔水流星和英仙座流星? 英仙座流星的條紋可以追溯到英仙座的一個明顯輻射體。德爾塔水瓶座流星似乎是從更靠南的寶瓶座出現的,位於本畫面左上方。當然,螢火蟲的生物發光閃光在北方的夏夜也很常見。但如何區分螢火蟲和流星呢?試著捕捉一隻吧。
原文: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 Aquarid 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.
※ 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。