Rosette nebula

Rosette nebula 7

Rosette nebula

It’s been some time since I have done astrophotography but the recent cold and crisp weather has provided a perfect opportunity to get out and image again and re whet my appetite. This image of the Rosette Nebula (also known as Caldwell 49) was taken from the garden in Salisbury over two successive nights. The nebula is a H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way galaxy. The open star cluster NGC 2244 (Caldwell 50) at its centre 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 5000 light-years from Earth and measure roughly 130 light years in diameter (to put this in context, light from the sun takes just 0.000015561 light years, or 8 minutes, to reach Earth!) 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 10000 solar masses.
This image comprises 198 x 3 minute images stacked and processed to generate a final image.

William Optics GT81
William Optics Flat 6AIII
Skywatcher HEQ 5 Pro
Optolong L-eXtreme filter

198 x 180s lights, 40 darks, 50 flats, 50 dark flats at gain 100 and cooled to -10C.
Stacked in DSS and processed in PS and LR

Explore 22 January 2023

Posted by Shane Jones on 2023-01-21 23:03:41

Tagged: , Rosette nebula , Nebula , Caldwell 50 , NGC2244 , Stars , Celestial , Space , Cosmic , Dust , Emission nebula , William Optics GT81 , Flat 6AIII , ZWO ASI 2600 MC Pro , ZWO EAF , Skywatcher HEQ5 Pro , ASI AIR PRO , L-eXtreme

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