Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  LBN 943  ·  LBN 948  ·  LBN 949  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2244  ·  NGC 2246  ·  Rosette nebula  ·  Sh2-275  ·  The star 12Mon
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Rosetta nebula, Valerio Avitabile
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Rosetta nebula

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Rosetta nebula, Valerio Avitabile
Powered byPixInsight

Rosetta nebula

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Description

Rosetta Nebula (also known with the abbreviations of catalog NGC 2237 and C 49) is a large region H II in the constellation of the Unicorn. The nebula is located at a distance of 1600 parsecs (about 5200 light years) from Earth and has an approximate size of 100 light years. At its center is a bright open cluster, known as NGC 2244; the blue stars of the cluster emit ultraviolet radiation, which excites the gas of the nebula leading it to emit red light, some globes of Bok have been observed in it, believed to be a breeding ground for new stars. It is one of the brightest subjects in the night sky and its position, near the celestial equator, allows its observation on both hemispheres.

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Rosetta nebula, Valerio Avitabile