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Image of the day 12/30/2015

    NGC 2237 Rosette Nebula - RC collimation testing (Mosaic), Paddy Gilliland

    NGC 2237 Rosette Nebula - RC collimation testing (Mosaic)

    Image of the day 12/30/2015

      NGC 2237 Rosette Nebula - RC collimation testing (Mosaic), Paddy Gilliland

      NGC 2237 Rosette Nebula - RC collimation testing (Mosaic)

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      Description

      Merry Christmas and a happy new year to all.

      Been preparing the RC for Jan/Feb on a borrowed portable mount while waiting for the obsy to be finished over next few weeks.

      This picture is made up of 20 hours Ha data over 4 panes + my old colour from an earlier image.

      Satisfied it is close enough to go into the obsy now - the portable mount struggled a little but end results to not seem to bad so thought i would post.

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      The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter.

      The cluster and nebula lie at a distance of some 5,000 light-years from Earth [3]) and measure roughly 50 light years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

      A survey of the nebula with the Chandra X-ray Observatory has revealed the presence of numerous new-born stars inside optical Rosette Nebula and studded within a dense molecular cloud. Altogether, approximately 2500 young stars lie in this star-forming complex, including the massive O-type stars HD 46223 and HD 46150, which are primarily responsible for blowing the ionized bubble. Most of the ongoing star-formation activity is occurring in the dense molecular cloud to the south east of the bubble.

      A diffuse X-ray glow is also seen between the stars in the bubble, which has been attributed to a super-hot plasma with temperatures ranging from 1 to 10 million K. This is significantly hotter than the 10,000 K plasmas seen in HII regions, and is likely attributed to the shock-heated winds from the massive O-type stars. - Wikipedia

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      Histogram

      NGC 2237 Rosette Nebula - RC collimation testing (Mosaic), Paddy Gilliland

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      UK Astro-Imaging
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