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Lovely clear sky here last night so had a go at M51, not sure if the luminance layer in PS is too strong? How much percentage would most use or does it depend each time?

(Taken with mn190 & Atik 383L with Baader RGB filters, 4 Hrs Total)

post-35206-0-64426600-1424600258_thumb.j

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Looks great! I do think your losing a bit of color from the luminance mask though yes. I usually don't use more than 35% opacity. 

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Very nice Ben. I had never noticed the other Galaxy (top right) prior to your image

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Looks great! I do think your losing a bit of color from the luminance mask though yes. I usually don't use more than 35% opacity. 

Thanks. Yes that's what I suspected too. Im at 82% opacity and 82% fill here!

Here it is at 35%

get.jpg

What do you think between the two?

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Fantastic image! I've yet to do LRGB. This is making me excited! I would say the second image has more colour. Try bringing the luminance down a tiny bit again.

Alexxx

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I tend to add the luminance at around 30% then push the saturation a little. Add the luminance again at 40 and push the saturation again. I keep doing this till its 100% luminance. Seems to work fine.

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