successful hubble palette in GIMP?

[jahnpahwa]

Hi guys,



Is anyone processing narrowband from stacked tif to end?

I'm losing so much detail when de-greening! Example from last night below. The quality isnt world class to begin, but you cans see whats lost when i move colours around (in hue saturation tool, no change is saturation or lightness). For composing the RGB, I do a simple SHO allocation to channels, 100% of the applicable stack to each, nothing anywhere else... I wonder if I need to mix channels?


I'm considering startools and pixinsight, but the tightwad in me wants to keep on with GIMP as long as i can.


JP

[rustigsmed]

not sure how you would do it in gimp. but in photoshop, after you have your colour balance sorted you would/should blend in a mono version of the three channels (processed separately for your detail and dynamic range) so that the details are all maintained and not destroyed by processing in rgb. copying that over as a new layer and blending it in luminosity mode. the image then maintains the detail of the mono image but has the colour of the rgb (without the destructive effects). gimp should be able to do this.

cheers

[multiweb]

You have a bit of posterization but if you apply the changes as color only you can get to a softer result without over sharpening or burning.