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When to Use NSG

Bruce Donzanti
in PixInsight
After watching the videos on NSG, I realize I was not fully understanding what WBPP can and cannot do.  I always assumed that the local normalization step in WBPP was all you needed.  Now, I am confused as to when I should consider using NSG.  Other than blinking through the many frames I collect and observing the variation in light gradients across the field of view, is there a rule of thumb to say, Yes, it is best to use NSG? I mostly do NB and I watched the recent NB process example in Horizons in which NSG was utilized, but I can't get a handle on when it should be applied.     

Bruce

Comments

  • BlockHeadBlockHead
    edited April 2022
    I plan on addressing this as soon as I can with as much tact as possible.
    It is a complicated subject and there are some extenuating circumstances.
    The reason you have not seen the answer... is that it is hard to explain.
    If you TRULY explain everything... few people will listen/watch. Most will complain they do not "want to go back to school/college" again...etc etc. 

    So...I need to figure out the best way to do this- and this requires extra work on my part because I need to understand at a even "deeper" level what is going on. I will not instruct on something that I do not feel I understand as completely as my abilities will allow. 

    -the Blockhead
  • Bruce Donzanti
    OK- fair enough

    BTW- I went to 10 years of college, so a few more won't hurt when you are ready to instruct
  • Benoit Saintot
    I DO want to go back to college!
    Too often, people make videos or articles saying "I noticed it worked great for me", but it lacks so much logical and scientific explanation. That's what I'm looking for in this website.
    For the " set this parameter to 2, I don't know what it does, but it works great", we have plenty of choice!

  • BlockHeadBlockHead
    Hi Guys,

    I am getting very close now... hang in there.
    -the Blockhead
  • BlockHeadBlockHead
    @BruceDonzanti

    I have now released videos that explain some of what you want with respect to weighting (part of what NSG does) . Normalization is the other facet I need to cover... working on that bit.

    -the Blockhead
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