四分之一月亮和姊妹星
Quarter Moon and Sister Stars
來源：Alan Dyer,
TWAN｜發表日期：2024-09-03
九天前，兩個截然不同的天空圖示同時升起。具體地說，從加拿大阿爾伯塔省觀看，地球的月亮與昴宿星團的姐妹星共享東方天空。 眾所周知的昴宿星團的天文影像通常會顯示出星團誘人的藍色反射星雲，但在這裡，它們被橙色的月昇天空沖淡了。被稱為 " 1 / 4 月 "的半亮月球曝光過度，不過透過地球反射的光照，可以看到月球暗淡的夜面輪廓。這張特寫圖片由八次連續曝光合成，亮度經過調整，與人眼所見一致。 月球每月一次幾乎（或直接）從昴宿星前方經過。
原文：Nine days ago, two quite different sky icons were imaged rising together. Specifically, Earth's Moon shared the eastern sky with the sister stars of the Pleiades cluster, as viewed from Alberta, Canada. Astronomical images of the well-known Pleiades often show the star cluster's alluring blue reflection nebulas, but here they are washed-out by the orange moonrise sky. The half-lit Moon, known as a quarter moon, is overexposed, although the outline of the dim lunar night side can be seen by illuminating earthshine, light first reflected from the Earth. The featured image is a composite of eight successive exposures with brightnesses adjusted to match what the human eye would see. The Moon passes nearly -- or directly -- in front of the Pleaides once a month.
※ 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。