The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It lies at a distance of about 1,000 light years from Earth. It is so named because it appears to resemble the outline of the US State of California on long exposure photographs. (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.
9photos of 5 min flitering Luminance except UV
5 photos of 5 min filtering Red
5 photos of 5 min filtering Blue
3 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/270330
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.
Great and powerful posting thanku
Thanks!