M27 哑铃星云
M27 Dumbbell Nebula
This image was obtained with the wide-field view of the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. M27, also known as the 'Dumbbell Nebula', is a famous planetary nebula. The central portion of the nebula is quite bright, however it also has a faint outer halo that is clearly visible in this deep image. The image was generated with observations in the Oxygen (blue), Hydrogen-Alpha (red) and Sulphur (green) filters. In this image, North is left, East is down.
M27，也称为“哑铃星云”，是一个著名的行星状星云。
星云的中心部分非常明亮，有一个微弱的外晕，在这张宽视野图像中清晰可见。
图像通过氧（蓝色）、氢α（红色）和硫（绿色）滤镜生成的数据合成。
在这张图中，左边是北面，下面是东面。
照片由基特峰国家天文台的Mayall 4米望远镜的马赛克宽视场相机拍摄。
https://noirlab.edu/public/images/noao-m27-kpno-mayall-4-m/
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