Quote:
Originally Posted by pvelez
Thanks for that. Its certainly an improvement.
What do you mean by a false luminence layer - is that a mask? I suspect its similar to the technique I've been using in PI
I've been using Channel extraction to create a new luminence layer, clipping the black with Histogram Transform, applying it as a mask, inverting it and then playing with the Histogram Transform tool to bring down the black. I hadn't thought of using Curves instead to beat down the noise in the background.
I'll have another play tonight. I collected another hour of L last night so I can add that too.
Pete
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A fake liuminance layer means that - in photoshop CS5 -
I converted you colour pic to gray scale.
I then made an inverted layer mask & adjusted the sliders to mask out
the bright areas such as stars & the galaxy. (ctrl L)
I then worked on the background with curves to darken the background.
I then used this as a new layer with a blend mode set to luminosity
to enable adjustment of the colour image.
I also played with contrast & HDR toning.
All of this should be done with your actual luminance data
not a fake luminance that I played around with.
I always divide my image into 3 layers.
(1) stars
(2) galaxy or nebula
(3) background.
I work on each separately & then combine them.
Also - with background problems.
Make a new stack with all processing set to median -
that really helps - but use that extra stack only in the background layer.
cheers
Allan