四分之一月亮和姐妹星
(原标题: Quarter Moon and Sister Stars)
2024-09-03
浏览次数: 15
九天前，两个完全不同的天空图标被拍到一起升起。具体来说，从加拿大的阿尔伯塔看，地球的月亮与昴宿星团的姐妹星共享东部天空。众所周知的昴宿星团的天文图像经常显示出星团迷人的蓝色反射星云，但在这里，它们被橙色的月出天空冲淡了。半亮的月亮，被称为四分之一月亮，被过度曝光，尽管昏暗的月球夜晚的轮廓可以通过照亮地球的光线看到，光线首先从地球反射回来。这张特色图片是由8张连续曝光的照片合成而成，亮度调整到与人眼所能看到的相匹配。月球每月从昴宿四的正前方经过一次。
查看原文解释
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.
© Alan Dyer, TWAN