Hi.
I am currently evaluating Affinity Photo to use with Astrophotography. I was hoping someone could help me with some basic questions.
Imagine a photo of the night sky. A few stars but mostly 'dark sky'. The dark sky is far from black due to light pollution and other effects and often has a reddish or other color hue to it. To put it in terms of RGB think something like R: 90, G: 75, B: 78. I want to neutralize and darken the sky - something like R: 35, G: 35, B:35. I know how to do this in Photoshop (use the black point adjustment tool in Curves) but from poking around in the software and forums that feature is not yet available in AP. If I try to adjust the RGB values for the entire image, the stars also get impacted. So, how would I go about doing this in AP? My thought is to create a layer with just the stars on it and another layer with just the sky background. I could then manipulate the RGB values of the sky layer without impacting the star and then re-merge the layers. I have no idea how to select the stars and put on a layer and select the sky to put on another layer. How do I do these things in AP? Does any one have a better suggestion on how to accomplish this?
Thanks.
Ken
