rjxie 发表于 2003-7-25 12:23

[酷图] M27哑铃星云的光晕。

Dumbbell Nebula Halo
Credit & Copyright: Robert Gendler
Explanation: In 1764, French astronomer Charles Messier sighted this gorgeous cosmic cloud which he described as an oval nebula without stars. Cataloged as M27, it is now popularly known as the Dumbbell Nebula, not for its substandard academic performance but for the elongated shape, like a bar with weights on each end, which first caught Messier's eye. This deep image of the bright planetary nebula does reveal the Dumbell's central star though, and an array of foreground and background stars toward the sly constellation Vulpecula. The picture is a composite that includes 8 hours of exposure through a filter designed to record only the light of hydrogen atoms, tracing the intricate details of the nebula's faint outer halo which spans light-years. Thought to be an example of the fate awaiting our own Sun 5 billion years hence, the Dumbbell Nebula is about 1,200 light-years away.

小龙·哈勃 发表于 2003-7-25 12:25

我喜欢这个星云

虽然我不曾看过它的哑铃外形。

littlePig 发表于 2003-7-25 12:51

我倒是看见过了 :D

小龙·哈勃 发表于 2003-7-25 13:33

我的镜子口径太小了

不过看我就看过很多次了。

=HF=大虾 发表于 2003-7-25 14:36

我的破镜子太老太破了，现在连看火星都只能看到红色的圆面，无法看到细节，就更不用说看深空天体了。

meteorobs 发表于 2003-7-25 17:11

总结。。

一个字。。
穷。。。。

ak49 发表于 2003-7-25 20:14

小哑铃星云：
http://www.pkufo.com/download/book/kepu/yuzhoudaguan/nebulae/images/n14.jpg


哑铃星云：
http://www.pkufo.com/download/book/kepu/yuzhoudaguan/nebulae/images/n13.jpg
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