The Rosette Nebula (NGC 2237) is a large, spherical (circular in appearance),hydrogen region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The cluster and nebula lie at a distance of some 5,000 light-years from Earth and measure roughly 50 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. (dixit Wikipedia)
To take this photo i used the following setup:
Scope: TS Optics ts 80/352 astroimaging
Mount: AZEQ6
Camera: Atik One 6.0
The total exposure is around 3 hours in october 2016. As my camera is black & white i use RGB filters to build the chrominance layer, and stack several photo on each filter to maximize signal over noise.
23 photos of 5 min flitering Luminance except UV
5 photos of 5 min filtering Red
5 photos of 5 min filtering Blue
5 photos of 5 min filtering Green
I used the software Prism 10 to manage the capture, the pre-treatment (Removing offset, dark and flat). The stacking and the post-treatment was done with Pixinsight and at the end Photoshop.
Technical detail of the photo here: https://www.astrobin.com/270336/
If you want more information, ask me in comment !
I hope you enjoyed it! If it is the case, resteem and follow me to see more astrophotography.