星河下喷发的火山
影像来源与版权:Diego Rizzo

说明:有时地面和夜空的景色都非常精彩,以至于说不清哪里更让人印象深刻。例如,在这幅特征影像的陆地上,可以看到正在喷发的富埃戈火山,山顶上被风吹起的炽热火山灰和沿着火山一侧流下的炽热熔岩流。透过山下的薄雾,我们还能看到邻近城镇的灯光。而在天空中,银河系的中央盘面从影像左上方斜穿而过,其下方是一颗稍纵即逝的流星,右上方是一颗卫星的轨迹。木星也出现在影像的左上方,明亮的心宿二位于其右侧。这幅单次曝光时长为25秒的影像是4月中旬在危地马拉阿卡特南戈火山(富埃戈火山的姐妹火山)的一侧拍摄而成的,它捕捉到了大片陆地和天空的美景。不过这颗流星是在拍摄火山喷发影像的30分钟前拍摄的一幅照片中捕捉到的,而当时火山喷发的景象并没有那么惊艳。两张影像后来通过数字叠加合成了这幅影像。
翻译:北京天文馆

A Volcano of Fire under a Milky Way of Stars
Image Credit & Copyright: Diego Rizzo

Explanation: Sometimes it’s hard to decide which is more impressive — the land or the sky. On the land of the featured image, for example, the Volcano of Fire (Volcán de Fuego) is seen erupting topped by red-hot, wind-blown ash and with streams of glowing lava running down its side. Lights from neighboring towns are seen through a thin haze below. In the sky, though, the central plane of our Milky Way Galaxy runs diagonally from the upper left, with a fleeting meteor just below, and the trail of a satellite to the upper right. The planet Jupiter also appears toward the upper left, with the bright star Antares just to its right. Much of the land and the sky were captured together in a single, well-timed, 25-second exposure taken in mid-April from the side of Fuego’s sister volcano Acatenango in Guatemala. The image of the meteor, though, was captured in a similar frame taken about 30 minutes earlier — when the volanic eruption was not as photogenic — and added later digitally.
Astronomy Picture of the Day 05/27/2019