Hi all,
I' reasonably new to imageprocessing, but have gained a little experience in Nebulosity and GIMP for creating and retouching astrophotography images.
In astrophotography you typically and up with 4 separate greyscale images; one for each RGB channel and one for luminosity. To create an RGB images in Nebulosity you select the function "composite RGB", assign the right greyscale image to the right channel and press "apply"... and there it is :-)
I've been trying this in Affinity, but can not find/comprehend a way to do this.
Can anyone point me out were to start and how to accomplish this?
Thanks!
Johan