马头星云四周的云气丝
影像来源与版权:Mario Zauner

说明:猎户座内著名的马头星云并不孤单。这幅深空曝光影像呈现了在中心下方可见、我们熟悉的黑暗斑块,它是一个由尘埃和炽热气体构成的巨大复杂体的一部分。为了显示这片马头星云的细致结构,一位天文爱好者使用一台位于奥地利家中后院的望远镜进行时长7.5个小时的拍摄,收集并艺术性地合成了这些影像,其中氢、氧和硫分别发出红色、绿色和蓝色辉光。这幅壮观的合成影像详细描绘了一幅由气态云气丝和丝状尘埃构成的复杂织锦,它们都是长久以来被恒星风和古代超新星所侵蚀而成的。火焰星云就在马头星云左侧可见,而影像左上方的亮星则是猎户腰带上的中央恒星——参宿二。马头星云位于猎户座方向、距离我们1,500光年远处。
翻译:北京天文馆

Wisps Surrounding the Horsehead Nebula
Image Credit & Copyright: Mario Zauner

Explanation: The famous Horsehead Nebula in Orion is not alone. A deep exposure shows that the dark familiar shaped indentation, visible just below center, is part of a vast complex of absorbing dust and glowing gas. To bring out details of the Horsehead’s pasture, an amateur astronomer used a backyard telescope in Austria to accumulate and artistically combine 7.5 hours of images in the light of Hydrogen (red), Oxygen (green), and Sulfur (blue). The resulting spectacular picture details an intricate tapestry of gaseous wisps and dust-laden filaments that were created and sculpted over eons by stellar winds and ancient supernovas. The Flame Nebula is visible just to the left of the Horsehead, while the bright star on the upper left is Alnilam, the central star in Orion’s Belt. The Horsehead Nebula lies 1,500 light years distant towards the constellation of Orion.
Astronomy Picture of the Day 04/03/2019