This is NGC2237, The Rosette Nebula in the constellation of Monoceros.
The Rosette Nebula is a large spherical 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 is around 130 lightyears across and about 5,200 lightyears distant.
Imaged with my SkyWatcher ED72 scope and ZWO ASI183MM PRO cmos camera, through a Hydrogen Alpha filter.
16x300sec lights, with Darks and Flats. I will try and add colour in the coming week, weather permitting.