马头与火焰
(原标题: Horsehead and Flame)
2022-12-29
浏览次数: 16
马头星云，著名的天体暗标记，也被称为巴纳德33，在这幅清晰的宇宙天空中，它被发射星云的背景光所衬托。大约5光年高的马头位于大约1500光年远的猎户座。在该地区丰富的分子云复合体中，从我们在银河系的角度来看，这片广阔的模糊尘埃只有偶然才有一个可识别的形状。猎户座最东边的带星，明亮的参宿七，在中间的左边。阿尔尼塔克发出的高能紫外线照亮了尘埃飞扬的NGC 2024，也就是它下方的火焰星云。完成了一项宇宙对比研究，蓝色反射星云NGC 2023位于马头星云下方。这张结构良好的望远镜视野横跨了天空中大约3个满月。
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The Horsehead Nebula, famous celestial dark marking also known as Barnard 33, is notched against a background glow of emission nebulae in this sharp cosmic skyscape. About five light-years "tall" the Horsehead lies some 1,500 light-years away in the constellation of Orion. Within the region's fertile molecular cloud complex, the expanse of obscuring dust has a recognizable shape only by chance from our perspective in the Milky Way though. Orion's easternmost belt star, bright Alnitak, is to the left of center. Energetic ultraviolet light from Alnitak powers the glow of dusty NGC 2024, the Flame Nebula, just below it. Completing a study in cosmic contrasts, bluish reflection nebula NGC 2023 is below the Horsehead itself. This well-framed telescopic field spans about 3 full moons on the sky.
© Jason Close