Pacman Nebula (or NGC 281), is a bright emission nebula in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. It is estimated it lies 9200 ly. from us. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character. E. E. Barnard discovered this nebula in August 1883, who described it as "a large faint nebula, very diffuse." (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 2 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.
9 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/270334
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.