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GUM15 Part 11 - Questions

Alan Karty
in PixInsight
Hello Adam.  

First let me say that I have learned so much going through your GUM15 processing presentation, e.g., enhancing individual colors by splitting channels, emphasizing colors via selective hue shift, and using Starnet, Local FHH, and Blend to bring out a stunning amount of contrast that no amount of Curves and LHE can match.  Nonetheless, although I used the data provided and followed your steps and settings, I did not get the same result in the Blended image.

1.  The color red bloomed in intensity and where brightest fine contrast was lost compared to a Curves/LHE image.  Concurrently, the blue streaks that I had worked to bring out turned violet.  Put another way, the reds were rich and deep, but where brightest fine contrast was actually lost.
2.  For the largest stars, their glows got bigger and some blue halos picked up a violet tinge.
3.  For what it's worth, I applied DSE Amount 0.30 at the end and I thought it added depth to the dark areas.

Thank you for your help.

Alan  

Comments

  • BlockHeadBlockHead
    Hi Alan,

    Well... we are working with the same data! I am not certain I can make a suggestion other than you seem to have identified areas that didn't work out- and it is my hope you might find ways to get there even if the path I created somehow grew faint and lost you in the woods! 

    It sounds like over saturation is doing bad things.  With regards to the red- you can do some tricky things. If you use color calibration and select a large red region- you can shift the white balance a bit and I suspect you might go in a direction that you would like.

    -the Blockhead
  • Walter Lickteig
    One suggestion...  Before applying any Curves Transformations, use RGBWorkingSpace with the values set to 1,1,1...
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