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 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".

The Little Rosette Nebula, or Sharpless 2-170, is a less known nebula named for the Rosette Nebula.
Reference:Wikipedia

Telescope: William Optics FLT132

Camera: ZWO ASI2600MM/P

Filter Wheel: ZWO & Position Filter Wheel

Filters: QHY 36mm unmounted L R G B, Baader 36mm unmounted HA OIII SII

Guidng: ZWO OAG-L

Guide Camera: ZWO ASI120 Mini

Mount: Losmandy G11 running EQStarPro

Mount Control: EQASCOM

Focusing: SharpSky Pro and Sequence Generator Pro 4 (automated)

Light Box by Exfso

Capture Software: Sequence Generator Pro 4

Guiding Software: PHD2

Calibration and Stacking Software: PixInsight

Processing Software: PixInsight

Number and Type of Data Frames: L=90X120sec, R=30x180sec, G=30x180sec,
B=30x180sec

Ha= x sec , SII= x sec, OIII= x sec

Binning: 1x1

Total Image Time: 7.5 hrs

Location: Lockleys Observatory B, Tanunda, Sth Australia