« on: September 09, 2012, 04:53:20 PM »
I went back and put the RAW sharpness settings and unsharp masking to zero before converting the file to TIFF and: halos are gone.You can also reduce the halos in unsharp mask by playing with the unsharp radius, e.g. making it much bigger removes background on a larger, smoother scale. You can increase the brilliance of the stars quite a bit by doing this (by reducing the sky haze), but have to take care to not introduce artefacts on large scales, e.g. foreground objects like the mountains in your case (or the dark lanes in the milky way). You can get around this by using masks etc, but I'm starting to get off topic.