ngc4372和暗斗星
(原标题: NGC 4372 and the Dark Doodad)
2026-07-31
浏览次数: 1572
黑暗的Doodad星云飘过南部的天空，这是双筒望远镜对蝇座的一个诱人的目标。这是一片布满灰尘的星际云，在煤袋星云和南十字星座南部的丰富星空中可以看到。在这张望远镜视野中，暗Doodad延伸了大约3度，它的南端（右上）被黄色球状星团NGC 4372打断。当然，NGC 4372漫游在我们银河系的光晕中，这是一个距离我们大约2万光年远的背景天体，只是偶然沿着我们的视线到达了暗Doodad。它距离我们大约700光年，长度超过30光年，它清晰的轮廓属于可能形成恒星的Musca分子云。1986年，天文成像学家兼作家丹尼斯·迪·西科在澳大利亚内陆观测哈雷彗星时，首次创造了这个令人愉快的头韵绰号。
查看原文解释
The Dark Doodad Nebula drifts through southern skies, a tantalizing target for binoculars toward the small constellation Musca, The Fly. A dusty interstellar cloud, it's seen against rich starfields just south of the Coalsack Nebula and the Southern Cross. Stretching for about 3 degrees across this telescopic field of view, the Dark Doodad is punctuated near its southern tip (upper right) by yellowish globular star cluster NGC 4372. Of course NGC 4372 roams the halo of our Milky Way galaxy, a background object some 20,000 light-years away and only by chance along our line-of-sight to the Dark Doodad. About 700 light-years distant and over 30 light-years long, the Dark Doodad's well defined silhouette belongs to the potentially star-forming Musca molecular cloud. The dusty Dark Doodad's delightfully alliterative moniker was first coined by astro-imager and writer Dennis di Cicco in 1986 while observing Comet Halley from the Australian outback.
© Alessandro Cipolat Bares