2019 December 17

The Horsehead Nebula
Image Credit & Copyright:
Mark Hanson & Martin Pugh, SSRO, PROMPT, CTIO, NSF

Explanation: Sculpted by stellar winds and radiation, a magnificent interstellar dust cloud by chance has assumed this recognizable shape. Fittingly named the Horsehead Nebula, it is some 1,500 light-years distant, embedded in the vast Orion cloud complex. About five light-years “tall”, the dark cloud is cataloged as Barnard 33 and is visible only because its obscuring dust is silhouetted against the glowing red emission nebula IC 434. Stars are forming within the dark cloud. Contrasting blue reflection nebula NGC 2023, surrounding a hot, young star, is at the lower left of the full image. The featured gorgeous color image combines both narrowband and broadband images recorded using several different telescopes.

Mark Hanson & Martin Pugh, SSRO, PROMPT, CTIO, NSF

说明: 在恒星风和辐射的雕塑下,一团巨大的星际尘埃云,意外地拥有我们很熟悉的形状,并很贴切的命名为马头星云。上面这团暗星云,是距离我们约1,500光年远的庞大猎户星云复合体之一部份。这个高约5光年,有恒星正形成于其内的暗星云,另拥有巴纳德33的编录号。而它之所以现踪,则是因为其不透光尘埃所造成的剪影,镶在光亮的泛红发射星云IC 434之内。在影像左下角,色泽形成鲜明对比的泛蓝反射星云NGC 2023,则环拱着一颗炽热的年轻恒星。这幅壮丽的主题影像,是由数部望远镜拍摄的宽与窄波段影像叠合而成。

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