I’m trying to understand the basics of image processing in Siril before finishing off in an image processor. From various pages, I see that background extract, colour calibration, histogram stretching, green noise reduction seem to be the common steps, but the order seems to be different in different tutorials. Does the order matter, and what should it be?
For background extraction, where should I put the green squares? I see tutorials mentioning that they should go where there aren’t stars, but then the videos place them in areas with stars. My squares seem to be quite small too. Should I use “generate” to get a grid of squares and delete the ones that are not my subject? Does it matter if I use the red, green, or blue channel to add the squares?
Do we need to apply background neutralisation separately to the R, G, and B channels? I seem to end up with splotches of red, blue, etc. Do I need to repeatedly neutralise the background on each channel until there’s none of the corresponding colour in background areas? If I apply background neutralisation and white point calibration, the image tends to have very little colour… almost becomes black and white. I think I must be doing something wrong… any pointers?