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Hi Marcus,
Well here's what I have been doing lately and sometimes it has worked wonderfully and other times not as well so consistency can be a problem.
I use CCDstack to get up to an LRGB combine and then save it as a RAW tiff.
I process the Ha in CCDstack and save it as a RAW tiff.
Now I open the LRGB in Photoshop and process it with multiple levels/curves
until it is bright and the histogram is bell shaped. Then do bits and pieces until I am happy with the LRGB.
Now I open the Ha and convert it to RGB mode from grayscale.
I then do levels/curves etc and bring it up to the point I like it.
I then create a new layer on the LRGB and copy the Ha to that layer and delete the green and blue channel. I set this layer usually to screen rather than lighten although sometimes lighten gives a better result. Opacity usually about 50% or less. Now I duplicate that Ha layer and set that to "saturation" and opacity to probably only 20%. This brings out the Ha colour and give control over the colour. This approach gives rich colours and no salmon hues.
I then create 2 more new layers and one is assigned to the blue channel and maybe only 10% and the other to luminosity and again to suit but not too much. This last step will shrink stars to more the Ha sized tiny stars but
I find if you go too hard you will get a dull halo around a bright core for stars and it doesn't look good.
Then I flatten the image and do a few final tweaks, noise reduction, sharpening etc.
You are probably better off doing deconvolution on your subs prior to combine to get the star sizes smaller rather than trying after the combine when your options are limited by the blue or red subs being larger and bleeding through.
When you say you work to match star sizes what tools do you use to accomplish that?
Greg.
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