Got only 16 subs a 300s before the clouds. Cold! -10C, fought hard to get system functional, almost gave up. No calibration, no polar alignment, glad I got something in the end.
NGC 2237 and NGC 2238 are parts of the **Rosette Nebula**¹²³⁴. It is an **emission nebula** in the constellation Monoceros, about 5,000 light years away from Earth¹²³.
The Rosette Nebula is a large region of interstellar gas and dust that is ionized by the radiation from hot stars¹²³. It contains a young open cluster, NGC 2244, which lies at the center of the nebula and is responsible for creating a hole in the nebulous material¹²³. The nebula also has several dark globules of dust that may form new stars in the future¹²³.
The Rosette Nebula was discovered by **William Herschel** in 1785, but its different parts were catalogued separately by different astronomers¹². NGC 2237 and NGC 2246 were discovered by **Lewis Swift** in 1871 and 1885, respectively¹. NGC 2238 was discovered by **Albert Marth** in 1864¹. NGC 2239 was discovered by **John Herschel** in 1830¹. NGC 2244 was discovered by **John Flamsteed** in 1690¹.
The Rosette Nebula has an apparent magnitude of **6.0** and can be seen with binoculars or a small telescope¹². It appears as a diffuse patch of reddish light near the star Beta Monocerotis¹². It is best seen from the northern hemisphere during winter months².
Kilde: Samtale med Bing, 18.6.2023
(1) ばら星雲 - Wikipedia.
https://bing.com/search?q=NGC+2237%2c+2238.
(2) NGC 2237, 2238, 2239 and 2246 - The Rosette Nebula.
http://www.atlasoftheuniverse.com/nebulae/ngc2237.html.
(3) 101 Must-See Cosmic Objects: The Rosette Nebula - Astronomy Magazine.
https://www.astronomy.com/magazine/news/2022/03/101-must-see-cosmic-objects-the-rosette-nebula.
(4) Nebulosa Roseta - Wikipedia, la enciclopedia libre.
https://es.wikipedia.org/wiki/Nebulosa_Roseta.
(5) 장미 성운 - 위키백과, 우리 모두의 백과사전.
https://ko.wikipedia.org/wiki/%EC%9E%A5%EB%AF%B8_%EC%84%B1%EC%9A%B4.
(6) Rosette Nebula - Wikipedia.
https://en.wikipedia.org/wiki/Rosette_Nebula.
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