Thanks for the feedback guys.
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Originally Posted by Lee
the blue channel is a lot less sharp than red and green - do you account for that at all in the combine???
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The blue channel is usually the most messy because the blue wavelength is most affected my atmospheric dispertion, especially at the low altitudes.
Sometimes I choose slighly different processing on the blue channel (usually less aggressive sharpening) when it's messy like this, because otherwise it just exaggerates the grain even more. You can also choose to apply more noise reduction to the blue channel.
The blue channel is also the dimmest, so when combining it usually needs more intensity to bring the colour balance to what you think Saturn should look like.