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 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula’s matter.
The nebula has a shape reminiscent of a human skull, and is sometimes referred to as the “Skull Nebula”. It is not to be confused with NGC 246, which is also nicknamed the “Skull Nebula”.
Object Designations: Caldwell 49 (NGC 2244 is the star cluster)
Also known as: Rosette Nebula
Constellation: Monoceros
Object Type: nebula
Distance: 5000 light-years away
Magnitude: 10
Discovery: John Herschel and John Flamsteed in 1690
This final image is:
35 – 120 second subs at 100 gain – with Askar Dual-band Ha + OII filter
35 – 120 second subs at 100 gain – with Askar Dual-band SII + OII filter
I processed the images using Pixinsight using:
Blink to clear out low quality images
Weighted Batch Balance
SpectroPhotometricCalibration
AutomaticBackgroundExtractor
BlurExterminator
NoiseExterminator
StarXTerminator
Pixmath to put stars back with both images.
