Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  LBN 948  ·  LBN 949  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2244  ·  NGC 2246  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  Sh2-275  ·  The star 12Mon
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Heart of the Rosette Nebula, Sasho Panov
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Heart of the Rosette Nebula

Getting plate-solving status, please wait...
Heart of the Rosette Nebula, Sasho Panov
Powered byPixInsight

Heart of the Rosette Nebula

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Description

Higher magnification using refractor with longer focal length (805mm) than my previous images (280mm) of this object reveal much more details. 

The Rosette Nebula (also known as NGC 2237, sh2-275 or Caldwell 49) is a giant emission nebula in the constellation Monoceros at a distance of about 5200light years. It is approximately 130 light years in diameter, significantly larger than the famous Orion Nebula (M42) which is much closer to the Earth. It is a region of intense star formation. The open star cluster NGC 2244 is located in the central region of the Rosette Nebula and contains few extremely hot blue stars, including a rare class of super hot blue main sequence stars of the spectral class O4. The X-ray radiation emitted by the stars results in a super-hot plasma with temperatures ranging from 1 to 10 million K, that is much hotter than the 10,000 K plasmas seen in majority of other HII regions. The central hole in the nebula is a result of the shock-heated winds and the radiation blasting away the gas.

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Heart of the Rosette Nebula, Sasho Panov