Hi
I have found these three methods which describe how to make a synthetic L in Pixinsight.
I need to experiment now.
synthetic luminance method 1
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R frames stack -> master R frame
G frames stack -> master G frame
B frames stack -> master B frame
Align R,G,B frames
ImageIntegration tool
- Combination = Average
- Normalization = additive with scaling
- Weights = Noise evaluation
- Scale estimator = iterative k-sigma
- Generate integrated image = enabled
- Evaluate noise = enabled
- Pixel rejection = No rejection
- Clip low range = disabled
- Clip high range = disabled
synthetic luminance method 2
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R frames stack -> master R frame
G frames stack -> master G frame
B frames stack -> master B frame
Align R,G,B frames
pixel math: master R+master G+master B
synthetic luminance method 3
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synL1 = ImageIntegration( red1 green1 blue1 )
synL2 = ImageIntegration( red2 green2 blue2 )
...
synLn = ImageIntegration( red(n) green(n) blue(n) )
finalLuminance = WinsorizedSigmaClipping ( L1, L2...Ln, synL1, synL2..., synLn) // sigma =4, Normalization = scale zero offset
LRGB = LRGBCombinationTool ( finalLuminance/RGB) // L=0,5, Sat=0,38-4,5
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