同享于两个半球的星空
在远离地球的宇宙中观察星空，会是什么模样？这个由在南北半球分别拍摄的照片合成的图像为我们提供了这样特殊的视角。居中的地平线将图像分成两部分，上面是位于29°N的IAC天文台在2020年2月在拉帕尔玛（La Palma）拍摄的北半球视图，下面是位于29S°的ESO拉西拉天文台（ESO La Silla Observatory）在2016年4月拍摄的与上图相匹配的南半球视图。在这幅画面中，银河几乎垂直地纵贯地平线。 它的尘埃云和明亮的星云突显在画面下半部的银河中心附近。 在上半部分，明亮的金星沉浸在黄道光中。 太阳的光线被位于黄道平面的星际尘埃反射到地球，形成黄道光。黄道光在满天繁星的天空中以一个完整的圆圈描出太阳系的黄道平面。 大望远镜圆顶从拉西拉（La Silla）倒悬的地平线上凸出，而在拉帕尔玛岛（La Palma），MAGIC望远镜站矗立在画面中心的上方。探索这同享于两个半球的夜空，您还可以找到仙女座星系（M 31）和大小麦哲伦星云。The Sun is hidden by a horizon that runs across the middle in this two hemisphere view of Earth's night sky. The digitally stitched mosaics were recorded from corresponding latitudes, one 29 degrees north and one 29 degrees south of the planet's equator. On top is the northern view from the IAC observatory at La Palma taken in February 2020. Below is a well-matched southern scene from the ESO La Silla Observatory recorded in April 2016. In this projection, the Milky Way runs almost vertically above and below the horizon. Its dark clouds and and bright nebulae are prominent near the galactic center in the lower half of the frame. In the upper half, brilliant Venus is immersed in zodiacal light. Sunlight faintly scattered by interplanetary dust, the zodiacal light traces the Solar System's ecliptic plane in a complete circle through the starry sky. Large telescope domes bulge along the inverted horizon from La Silla while at La Palma, multi-mirror Magic telescopes stand above center. Explore this two hemisphere night sky and you can also find the Andromeda Galaxy and the Large and Small Magellanic Clouds.
图片版权：PetrHorálek / ESO， Juan Carlos Casado / IAC（TWAN）
撰文：Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
每日一图APOD from NASA
2020.02.27 这个图片搞得很巧 南半球的银行比北半球绚丽啊！？
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