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| New Version 2023 |
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 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 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.
Telescope : ASA 500N (19.6 inches) f\3.8
Mount : ASA DDM85 equatorial mount with direct drives
Camera : FLI PL 16803
Time:3h 10min (28 Apr 2021)
Programs I have used : PixInsight 1.8.8 & Photoshop CS6
Location: El Sause,Chile
