Hi all...
I just came across an image on Astrobin, where the imager has stacked all of the LRGB subs into one (as he calls it) Super Luminance.
This led me to thinking, why can't the RGB subs be all stacked to create the luminance rather than a new set of data?
I know some people bin their RGB data for speed, and then there is the need for different sets of flats, but if one was not inclined to bin their RGB data, what is the overall benefit of shooting a luminance channel rather than stacking the RGB subs together?
Should you not be getting essentially the same required data?
The post is here
http://www.astrobin.com/full/285119/0/
Just a thought.
Cheers,
Scott