环状星云(M57)
[align=center][color=red][b][color=red]影像[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/lib/about_apod.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhr2SO95xg5aWnBxapP5vUDNgorvg#srapply][color=red]版权[/color][/url][color=red]与提供:[/color][/b][color=red] [/color][/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.astro-cooperation.com/&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiteMbXe77r90t1ghgOVv0BmekJaA][color=red]Astro-Cooperation[/color][/url][color=red] - Stefan Heutz/Wolfgang Ries [/color][/align][align=center][color=blue](2008年9月18日)[/color] [/align]
[img]http://www.bjp.org.cn/files/2008-09/18/F_07499d050fe44584bf71092839e47990_m57_18z_full.jpg[/img]
[align=center][url=http://antwrp.gsfc.nasa.gov/apod/ap080918.html][color=darkred]http://antwrp.gsfc.nasa.gov/apod/ap080918.html[/color][/url][/align]
[color=green][b]说明:[/b]位在[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.hawastsoc.org/deepsky/lyr/index.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgUB8lJNeyo0vrjVfC1Qyv6tweB5g][color=green]天琴座[/color][/url][color=green]内的[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://seds.lpl.arizona.edu/messier/m/m057.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhtQAd16SksLu8o5ua5FWtpnTk6Yw][color=green]环状星云(M57)[/color][/url][color=green] ，离我们约有二千光年远，是[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap080911.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjN7HnYRKK-Jck-HNjYdiJcUP7mBg][color=green]北半球[/color][/url][color=green]天文学家很熟悉的天体。 [align=left]虽然在一般的照片中，通常只见到大小约有一光年的中心环，但是这张由两份不同望远镜数据所组合出来的美丽深空影像，则要[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://arxiv.org/abs/astro-ph/0401056&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhIciFmfG5hBZoEssJaL76p4HHfvA]探索[/url]离星云[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://hubblesite.org/newscenter/archive/releases/1997/38/background/&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhj4e5nJCU8BA5hWsDVMu7If16rdzg]中心星[/url]更远的拱环状辉光云气。 [/align][align=left]当然，这个备受关注的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/messier/planetar.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhimP-Db_x-XkU740HcdYKHnPa_MPg]行星状星云[/url]家族[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap080904.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiY2vYVUGpKl-IlR2h1gtXB9xiVJA]典范[/url] ，其实和行星并无任何关联，它实际上是一件[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap030614.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjrEPTG3h3uov12yX3lA3XJl_MwYg]气态寿衣[/url] ，来自一颗类太阳恒星滨死阶段所抛出的外层气壳。 [/align][align=left][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.astro-koop.de/m57_18z.htm&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgOgXDGP49P9QgtsdIPgKBonVVJMA]这张组合影像[/url]使用了曝光时间超过十六小时的窄波段数据，用以呈现氢原子的红光辐射，而较醒目的蓝/绿辉光，则是来自较高温中心环内的氧原子。 [/align][align=left]除此之外，影像的右上角也可以见到更[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap030516.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiyELymePWmnsnYBuKOWQt-hnqeIw]后方[/url]的星系IC 1296。[/color] ::42:: ::42:: ::42::
[/align][align=center][size=2][color=magenta](转自成大天文学教室)[/color][/size][/align] 花儿一样，蛮漂亮的 这是用什么设备拍摄的啊？！！！太漂亮了 估计哈勃再加钱德拉X射线天文台吧 M27 M57 M76 M97梅西耶天体中行星状星云的典范
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