南北銀河全圖！??！

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.?

有了這項(xiàng)創(chuàng)造性的天文合作，你可以沿著銀河系的平面，在南北半球的天空之間架起橋梁。為了構(gòu)建廣闊的復(fù)合夜景，智利El Sauce天文臺（上圖）的天空在同一天拍攝，但比法國阿爾卑斯山圣韋蘭天文臺的天空晚了6個小時。6小時的時間延遲使地球自轉(zhuǎn)使銀河系在兩個地點(diǎn)的圓頂上方對齊。所有的曝光都是用類似的相機(jī)和安裝在簡單三腳架上的鏡頭進(jìn)行的。在智利黑暗的天空中，可以看到微弱的綠色輝光，這也是天文臺圓頂附近大小麥哲倫云的特征。在法國阿爾卑斯山，光污染很明顯，但在北邊的夜晚，遙遠(yuǎn)的仙女座星系仍然可以在地平線附近被發(fā)現(xiàn)。在地球上，這兩個天文臺相距約10000公里。