The Rosette Nebula (Caldwell 49) is an emission nebula located in the constellation Monoceros. An open star cluster (NGC 2244) consisting of stars that formed about 5 million years ago lies at the centre of the nebula. Imaged from a Bortle 7 zone

RedCat 51 apo refractor
ASI183MC CMOS camera with UV/IR cut filter
SkyWatcher EQ6R mount
30mm SVbony guide scope

70 3-minute subs plus 30 flats and 20 darks were stacked with DeepSkyStacker
Color calibration with SiriL
Stretches and all other post-processing with Photoshop and Neal Carboni's Astrotools