This may be required after adjusting Curves or Colour Saturation
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*** USE AN INVERTED RANGEMASK TO PROTECT HIGH-SIGNAL AREAS ***
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Strength
1. Change the exponent value (far right) to find the best range to be in.
2. Change the coefficient value (middle box / slider) to find the best value.
Edge Protection
1. Create a small preview with no stars or nebulosity.
2. Open Statistics process and select preview as view.
3. If StdDev isn't in the list, add it using the wrench button
4. Set the edge protection of the middle value and power.
Smoothness
1. Default values generally work well, adjust it to combat 'blotchyness' if required.
Iterations
1. Use 250 iterations for testing.
2. Increase to 500-1000 for the actual application.DEFAULT SETTINGS ARE NORMALLY FINE
Chrominance Mask
- This selects more saturated areas of the chosen colour.
Lightness Mask
- This selects the brighter areas of the chosen colour.$PXI_SRCDIR/scripts/ColorMask/ColorMask_0.7.js87a0c5d3773e68c6633b599d4879adf9
minHue
0
maxHue
0
maskType
0
maskStrength
1
blurLayers
0
Use this to remove any bad pixels, satelite trails, etc.
1. Extract Lightness image from original using 'ChannelExtraction'.
2. Create a preview which includes various star sizes
GUIDELINES
- If noise or other non-stellar structures are included, raise the 'Noise threshold'.
- If large stars are not included, raise the 'Scale' amount.
- Under 'Mask preprocessing', raise the 'Midtones' slider to exclude dim stars.
- If needed, raise the 'Shadows' slider to further restrict selection to bright stars.
- Lowering 'Truncation' will also provide a stronger result.
- Deselect galactic cores using the Clonestamp process (Ch 17) or by adjusting the 'Midtones' slider further.
- Structure Growth
> Lower 'Large-scale' to make large stars smaller, increase for the opposite effect.
> Lower 'Small-scale' to make small stars smaller, increase for the opposite effect.*********************************************
*** USE THE PREVIEW TO GET SETTINGS RIGHT ***
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Function
- Normally PIP function works well.
- SMI is a bit more extreme
Order
- Mormally somewhere between 0.1 - 1.0 works well.
Smoothness
- Normally somewhere around 1.0 works well.
Lightness Mask
- Leave this enabled.1. Use either a luminance or range mask to protect background
2. Use readout mode to check an area of background to ensure all 3 colour channels are properly aligned.
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*** USE INSTEAD OR AFTER CURVES TRANSFORMATION ***
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If you use masks like starmasks or range masks you can change the saturation of different elements.
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*** USE THE PREVIEW TO GET SETTINGS RIGHT ***
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Function
- Normally PIP function works well.
- SMI is a bit more extreme
Order
- Mormally somewhere between 0.1 - 1.0 works well.
Smoothness
- Normally somewhere around 1.0 works well.
Lightness Mask
- Leave this enabled.**************************************************************
*** USED TO SHRINK BLOATED STARS OR REDUCE NUMBER OF STARS ***
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***************** ALWAYS USE A STAR MASK *********************
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Operator
- Erosion (Minimum) > Use this for shirnking stars.
- Morpholigical Selection > Shirnks stars more subtly.
Structuring Element
- Use the circular one (Second row, second from the left)
Structure Manager
- Chose 5x5 Circular.
- Chose Size 5 (25 elements)
Selection
- Lowering this value creates more erosion.
- Raising this value creates more dilation.5x5 Circular Structure