NGC2237, THE ROSETTE NEBULA on 2023-11-21
This photo was taken in Kyle, Texas, under Bortle 5.9 skies, through a 6-inch f/4 Telescope, on a Sky-Watcher EQ6-R mount, with a ZWO ASI533MC PRO color camera. The total image acquisition time is: 04 hrs 15 min 00 sec. Plus an Optolong L Pro Light Polution Filter. Full size files are very large and can take a minute to download. After downloading the full-size picture to zoom in or out on a computer hold down the Ctrl key and use the scroll mouse button, or you can press the + or - key.
The Rosette Nebula (Also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of our 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 are approximately 5,000 light-years from Earth and measure roughly 130 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 the Rosette Nebula. Most of the ongoing star-formation activity is occurring in the dense molecular cloud to the south east of the bubble. 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.