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GHS and star halos

Craig Akins
in PixInsight
I was watching your GHS videos in Stretch Academy and you mentioned getting star halos. I must have missed where you discuss fixing the halos around stars after GHS. What would you suggest the path is? i was thinking BlurX but I applied that before the stretch.
Thanks in advance,
Craig

Comments

  • BlockHeadBlockHead
    Well.. star halos are a real part of the data. I know the in the future Russ/BXT/SXT will likely have leverage in this area. 
    (But I do not want to say more.)
    It depends on the type of halo (big, or small, colored or not...etc etc). Usually touching them just makes things look worse. If, however, it is a bloat in one color (like blue)- that can be handled a little bit (as I show in one of my videos)

    -the Blockhead

  • Craig Akins
    It is large bloat in a gray scale image. I was thinking it might be too much stretch possibly.
  • BlockHeadBlockHead
    Perhaps... but you probably want to determine the stretch on what is necessary for the object. Then... if the stars are not to your liking... you would make adjustments based on this final stretch. 

    One method is to stretch the stars independently of the object. I demonstrate this everywhere in my tutorials. You would use SXT to separate the stars (linear) ... and then give them a stretch that is different than the object. This can help with the halos a little.

    -the Blockhead
  • Craig Akins
    Ah ok, Ill try that. Thanks for the seed :)
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