卡帕駿馬十二年
Twelve Years of Kappa Cygnids

來源:Petr Horálek|發表日期:2025-07-25
卡帕天鵝座流星雨的流星在這幅延時攝影合成天景圖中被捕捉到。這個小流星雨的輻射點離它的同名恆星卡帕天鵝座不遠,在 8 月中旬達到頂峰,幾乎與更知名、更容易觀測到的英仙座流星雨同時出現。但是,卡帕天鵝座流星雨的峰值速度僅為每小時 3 顆流星,與英仙座流星雨相比,卡帕天鵝座流星雨的數量遠遠少於英仙座流星雨。為了捕捉幾十個卡帕天鵝座流星,這個長期天體成像專案從 2012 年到 2024 年期間的 51 個八月夜晚的曝光中選取流星進行彙編。大部分已識別出卡帕天鵝座流星的曝光都是在 2021 年 8 月進行的,這是該天文現象已知 7 年活動週期中的高點。所有 12 年的卡帕天鵝座流星都被記錄在希臘克里特島埃拉福尼斯海灘上方的銀河海夜景中,這也是在 2021 年 8 月記錄的。
原文:Meteors from the Kappa Cygnid meteor shower are captured in this time-lapse composite skyscape. The minor meteor shower, with a radiant not far from its eponymous star Kappa Cygni, peaks in mid-August, almost at the same time as the much better-known and better-observed Perseid meteor shower. But, seen to have a peak rate of only about 3 meteors per hour, Kappa Cygnids are vastly outnumbered by the more popular, prolific Perseid shower's meteors that emanate from the heroic constellation Perseus. To capture dozens of Kappa Cygnids, this long term astro-imaging project compiled meteors in exposures selected from over 51 August nights during the years 2012 through 2024. Most of the exposures with identified Kappa Cygnid meteors were made in August 2021, a high point of the shower's known 7-year activity cycle. All twelve years worth of Kappa Cygnids are registered against a base sea and night skyscape of the Milky Way above Elafonisi Beach, Crete, Greece, also recorded in August of 2021.
※ 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!
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