哑铃星云
哑铃星云（Dumbbell Nebula）又称为扯铃星云、M27、梅西耶 27或NGC 6853，是一个位于狐狸座的行星状星云，距离地球约1,360光年。
哑铃星云也是最早被人类发现的行星状星云，它于1764年被法国天文学家夏尔·梅西耶所发现。它的视星等为7.5等，直经约为8角分。对于使用小型望远镜或双筒望远镜的观测者，这可能是最理想的行星状星云目标。哑铃星云也是业余天文学一个受观迎的观测目标。
Dumbbell Nebula
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Dumbbell Nebula 哑铃星云
The Dumbbell Nebula (also known as Apple Core Nebula, Messier 27, M 27, or NGC 6853) is a planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light-years.
This object was the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and its diameter of about 8 arcminutes, it is easily visible in binoculars, and a popular observing target in amateur telescopes.
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