阳光拥抱
(原标题: Embraced by Sunlight)
2022-02-03
浏览次数: 48
尽管金星（左）是天空中最亮的行星，但在1月29日，它的视大小还不到月球的1/30。但是，当它们都在太阳之前升起时，它们都处于新月阶段，当它们站在东南地平线上时，它们的可见圆盘都有大约12%的亮度。在这两张不同的照片中捕捉到了相似的阳光下的新月。在不同的放大倍数下，每个面板都是用小型望远镜拍摄的堆叠视频帧的合成。金星像月亮一样经历一系列的相位，因为这颗内行星从傍晚的天空漫游到早晨的天空，然后再回来，周期为584天。当然，月球在29.5天内完成它自己的周期，即满月。
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ven though Venus (left) was the brightest planet in the sky it was less than 1/30th the apparent size of the Moon on January 29. But as both rose before the Sun they shared a crescent phase, and for a moment their visible disks were each about 12 percent illuminated as they stood above the southeastern horizon. The similar sunlit crescents were captured in these two separate images. Made at different magnifications, each panel is a composite of stacked video frames taken with a small telescope. Venus goes through a range of phases like the Moon as the inner planet wanders from evening sky to morning sky and back again with a period of 584 days. Of course the Moon completes its own cycle of phases, a full lunation, in about 29.5 days.
© Juan Luis Cánovas Pérez