一座一万公里的银河桥
(原标题: A 10,000 Kilometer Galactic Bridge)
2022-06-03
浏览次数: 15
有了这个创造性的天文合作，你可以跟随我们银河系的平面，因为它连接了北半球和南半球的天空。为了构建广阔的复合夜景，智利El Sauce天文台（上图）的天空在同一天拍摄，但比法国阿尔卑斯山的Saint-Veran天文台晚了6个小时。6小时的时差使得地球自转使银河系在这两个地点的圆顶上方对齐。所有的曝光都是用类似的相机和镜头安装在简单的三脚架上。在智利黑暗的天空中可以看到微弱的绿色气辉，这也是天文台圆顶附近大小麦哲伦云的特征。在法国阿尔卑斯山，光污染是显而易见的，但遥远的仙女座星系仍然可以在北方夜晚的地平线附近被发现。在地球上，这两个天文台相距约1万公里。
查看原文解释
With this creative astro-collaboration you can follow the plane of our Milky Way Galaxy as it bridges northern and southern hemisphere skies. To construct the expansive composite nightscape, skies over Observatorio El Sauce in Chile (top) were imaged on the same date but 6 hours later than the skies over the Saint-Veran observatory in the French Alps. The 6 hour time-lag allowed Earth's rotation to align the Milky Way above domes at the two sites. All exposures were made with similar cameras and lenses mounted on simple tripods. A faint greenish airglow is visible in the dark Chilean sky that also features the Large and Small Magellanic Clouds near the observatory dome. In the French Alps light pollution is apparent, but the distant Andromeda Galaxy can still be spotted near the horizon in the northern night. On planet Earth the two observatories are separated by about 10,000 kilometers.
© Maxime Oudoux