英仙座流星雨
(原标题: Perseid Rain)
2021-08-15
浏览次数: 31
上周，在一年一度的英仙座流星雨中，彗星尘埃降落在地球上，划过黑暗的天空。这张特色图片是在英仙座流星雨高峰期的夜晚从同一地点拍摄的许多照片的合成图。雨伞并不需要作为流星的盾牌，因为它们几乎完全蒸发在地球大气层的高处。许多组成部分的图像都是英仙座流星的个体，而其中一张图像显示了中国甘肃省酒泉市附近的前景。恒星背景包括我们银河系的中心带，几乎是垂直的，还有左边的木星和土星。虽然彗星尘埃粒子彼此平行移动，但由此产生的流星雨显然是从天空中的一个点辐射出来的——英仙座的辐射点。这张照片捕捉到了如此长的角度场，以至于在英仙座流星雨的轨迹上可以看到天空的曲率。著名的APOD图片提交：英仙座流星雨2021
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Comet dust rained down on planet Earth last week, streaking through dark skies in the annual Perseid meteor shower. The featured picture is a composite of many images taken from the same location over the peak night of the Perseids. The umbrella was not needed as a shield from meteors, since they almost entirely evaporate high in the Earth's atmosphere. Many of the component images featured individual Perseids, while one image featured the foreground near Jiuquan City, Gansu Province, China. The stellar background includes the central band of our Milky Way Galaxy, appearing nearly vertical, as well as the planets Jupiter and Saturn on the left. Although the comet dust particles are traveling parallel to each other, the resulting shower meteors clearly seem to radiate from a single point on the sky -- the radiant in the eponymous constellation Perseus. The image captured so long an angular field that the curvature of the sky is visible in the trajectory of the Perseids. Notable APOD Image Submissions: Perseid Meteor Shower 2021
© Luo Hongyang