The Rosette in narrowband

The Rosette nebula, Caldwell 49, NGC 2237, imaged in three narrowband wavelengths.
The Rosette Nebula, Caldwell 49, NGC 2237, 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 (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 are 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.
Included in the image are NGC 2239, NGC 2244, NGC 2246 and NGC 2252

William Optics FLT-91 triplet refractor
William Optics Flat 6A-III reducer-flattener
ZWO ASI 294MM Pro camera
SkyWatcher EQ6R-Pro equatorial mount

- Antlia Edge 4.5nm Ha filter, 35 x 4 minutes
- Antlia Edge 4.5nm OIII filter, 32 x 4 minutes
- Antlia Edge 4.5nm SII filter, 32 x 4 minutes
- Baader CMOS optimized Red filter, 12 x 1 minute
- Baader CMOS optimized Green filter, 20 x 1 minute
- Baader CMOS optimized Blue filter, 20 x 1 minute
30 dark frames, 25 flat frames and 25 dark-flat frames for each filter and/or exposure
Processed in PixInsight