mikefulb

Thank you that video had some good tips. I wasn't able to find a good mix of sample points for my example file above, however, that adequately removed the gradient. I suspect the type of gradient present might require a more sophisticated approach to remove.

I've been playing with the new 1.9 release with some astroimaging data I have and it is pretty cool stuff - great job! I am intrigued by the "Remove Background" filter. I have other astroimaging software which handles fairly complex light gradients but having a tool I can show new imagers how to use in Affinity is an attractive idea. I watched the OSC stacking video and around 11:30 in the filter is discussed some so I got an idea of what it does. It seems to mainly be for neutralizing the background color. But it was mentioned it can remove gradients as well. I made a simple linear gradient pixel layer and tried it out and it worked well. When I tried it with real world data I couldn't quite get it to do what I expected. I attached a version of the file I was working on. Any additional tips on using this tool for gradient removal would be greatly appreciated. Michael lightgradient.afphoto

I've been tinkering with Affinity Photo for awhile now (a 15+ year user of PS) for my astrophotography and when I saw the 1.9 release I had to try out the new stacking functionality. This is a simple stack of 180s H-alpha frames of the Horsehead nebula stacked and post-processed in Affinity Photo: More information here: https://www.astrobin.com/iz5cjv/ I'm very excited about this new release. I mentor local astroimagers at our astronomy club and having a full featured option like Affinity Photo at an accessible price is a real game changer. Michael