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The Nebulae of Ophiuchus

机译：ophiuchus的星云

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The region of the sky in and around Ophiuchus fascinated William Herschel; E. E. Barnard repeatedly returned to it in an attempt to understand the structure of the Milky Way. If you spend a little time with the constellation, then you'll begin to understand some of the historical misunderstandings that arose here. Observing this region, Herschel reacted with shock as he swept past such objects as the globular star clusters M80 and M4 only to enter what would become known as the dark nebula Barnard 42 and the bright nebulae IC 4603 and IC 4604. He proclaimed that he'd discovered a "hole" in the sky without a star to be seen. William's sister, Caroline, wrote to her nephew, John, warning him to take care when observing this region-her brother thought it might contain clues to the understanding of the entire heavens. Indeed, until the 20th century the Herschel family and the majority of the scientific community held to the theory that Herschel's "holes" came about during the formation of the nearby globular clusters. The theory proposed that somehow stars in regions such as Ophiuchus had been gathered up into these wonderfully beautiful globular star clusters, leaving only "vacancies" to be viewed and pondered.
机译：Ophiuchus的天空地区威廉·赫歇尔（Ophiuchus）上周围地区; E. E. Barnard反复返回它，试图了解银河系的结构。如果你与星座花了一点时间，那么你会开始了解这里出现的一些历史误解。观察这个地区，赫歇尔随着休克而反应，因为他扫过这种物体，因为他的星星簇M80和M4只能进入被称为黑暗的星云Barnard 42和明亮的星云IC 4603和IC 4604。他宣称他' d在没有明星的天空中发现了一个“洞”。威廉的姐姐Caroline写信给她的侄子，约翰，警告他在观察这个地区时要小心 - 她的兄弟认为它可能包含对整个天空的理解的线索。事实上，直到20世纪的赫歇尔家族和大多数科学界都持有亨德尔的“洞”在建立附近的球簇间的理论中。该理论提出，Ophiuchus等地区的某些星星被收集到这些奇妙的球形星星集群中，只留下了“空缺”来观察和思考。

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