Hi all,
This is my take on NGC 6188. It is 24x 5min Ha, 22x 5min OIII an 18x 5min SII for a total 0f 5.3 hours.
A lot of SHO images posted on astrobin seem to be presented as blue/orange with all the green removed. As the hydrogen is represented in the green channel, and because hydrogen is the main element in emission nebulae, I think I prefer the blue/green/gold combination. I would be interested to know what others think. Pixel peeping version at
astrobin.
I have some nice RGB data and would like to add RGB stars. RickS, if you happen to wander past this post, I found the following you posted on a different forum a couple of years ago:
"I usually add RGB stars to a NB image by extracting the L, a* and b* channels from each then using PixelMath and a star mask to blend the a* and b* from the RGB with the a* and b* from the NB image. Recombine the L, a* and b* for the NB image and voila! Sounds easy but there's always a bit of messing around and tuning for any specific image. The advantage of this approach is that the original NB star profiles are preserved and only the colour is changed."
Can you expand on that for a PI wannabe?
Kevin