The Saturn Nebula (also known as NGC 7009 or Caldwell 55) is a planetary nebula in the constellation Aquarius. It appears as a greenish-yellowish hue in a small amateur telescope.

土星星雲 或 NGC 7009 是位於 寶瓶座 的一個 行星狀星雲，以業餘的小 望遠鏡 觀賞會呈現綠色和淡黃色。 這個星雲是 威廉·赫歇爾 在1782年9月7日在自宅花園中使用他自己設計的望遠鏡觀測時發現的，也是他在巡天觀測早期發現的天體之一。 這個星雲起源自一顆 低質量恆星 將外面的氣體向太空層層的噴發，而形成星雲。 現在，他的中心是一顆 視星等 11.5等的 白矮星。 它因為其外觀酷似 土星 以側面朝向觀測者的形狀，而在1840年代由 羅斯勛爵 命名為土星星雲；當時他的 …

2024年9月13日 · Also known as the Saturn Nebula and NGC 7009, Caldwell 55 holds a dying star at its heart. NGC 7009 has a bright central star at the center of a dark cavity bounded by a football-shaped rim of dense, blue and red gas.

NGC 7009 is a Planetary Nebula in the Aquarius constellation. NGC 7009 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.

1997年12月17日 · Planetary Nebula NGC 7009 Like NGC 6826, NGC 7009 has a bright central star at the center of a dark cavity bounded by a football-shaped rim of dense, blue and red gas. The cavity and its rim are trapped inside smoothly-distributed greenish material in the shape of a barrel and comprised of the star's former outer layers.

"Of wonderfully intricate structure" (Curtis), the planetary nebula NGC 7009, the "first planetary," displays a pair of jug-handle-like "ansae" that give it the name "The Saturn Nebula." On the left is a drawing made from a series of photographs, the gaseous nebula perhaps appearing as its discoverer William Herschel may have seen it.

1997年12月17日 · NGC 7009 has a bright central star at the centre of a dark cavity bounded by a football-shaped rim of dense, blue and red gas. The cavity and its rim are trapped inside smoothly-distributed greenish material in the shape of …

NGC 7009: The Saturn Nebula Credit: B. Balick (U. Washington) et al., WFPC2, HST, NASA. Explanation: The layers of the Saturn Nebula give a complex picture of how this planetary nebula was created.

635 mm Aperture: The Saturn Nebula NGC 7009 immediately appears as a bright oval with a dark inner part, in which the central star can be temporarily observed. To the right of the elongation, there is a slightly brighter point, which is connected to the oval in a streak-like manner.

土星星云 或 NGC 7009 是位于 宝瓶座 的一个 行星状星云，以业馀的小 望远镜 观赏会呈现绿色和淡黄色。 这个星云是 威廉·赫歇尔 在1782年9月7日在自宅花园中使用他自己设计的望远镜观测时发现的，也是他在巡天观测早期发现的天体之一。 这个星云起源自一颗 低质量恒星 将外面的气体向太空层层的喷发，而形成星云。 现在，他的中心是一颗 视星等 11.5等的 白矮星。 它因为其外观酷似 土星 以侧面朝向观测者的形状，而在1840年代由 罗斯勋爵 命名为土星星云；当时他的 …