NGC 2237 Rosetta Nebula

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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Tecnosky 102/714 reduced to 585mm HEQ5 mount ZWO ASI294 PRO drive with Artesky 60/240 and ZWO ASI 224

 

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RGB 18x300sec with Optolong L-Pro 2 filter HA 22x600sec with H Alpha Baader 7nm 2 filter

OIII 15x600sec with OIII Baader 8,5nm 2 filter

tot 7h40min sky 20.01 sqm

 

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APT with Stellarium, eqmod driver, Phd2 Guiding, Pixinsight 1.8.8, Photoshop

Done