mightymonoped Posted November 20 Share Posted November 20 I went back to the original unprocessed FITS and did the following:- Crop Gradient adjustment (using GraXpert) In PI SpectroPhotometric Colour Calibration BlurX Stretch with BB scripts Star Removal Against 'Starless' - Multiscale Median Transform noise reduction against 8 layers In PS CC Selective NR using NoiseX against the outer frame. Stretch of starless image to bring out fainter nebulosity Local contrast adjustment Make stars smaller against Star layer image Boost saturation of stars through Match Colour in Star layer image Merge stars to starless using screen Flatten image and export. Here is the finished article in two versions. One without star reduction, the other with. I haven't messed around with this one any near as much as I did with the other posting and I feel happier about it but at this stage I'm snow blind and needs objective input from others as to whether it's any different and/or better (and which version for that matter)? Tony Without star reduction:- With star reduction:- 6 Quote Link to comment Share on other sites More sharing options...
Astrobdlbug Posted November 20 Share Posted November 20 Tony, thats a significant improvement, IMHO, the Pleiades are well defined and the molecular clouds aslo have more definition. For my perference I like the version without star reduction works better as the brighter stars help define the dust rather than in emission nebula when stars can overwhelm the nebula. You've put a shift in with this process and it shows, Bryan 1 Quote Link to comment Share on other sites More sharing options...
mightymonoped Posted November 21 Author Share Posted November 21 4 hours ago, Astrobdlbug said: Tony, thats a significant improvement, IMHO, the Pleiades are well defined and the molecular clouds aslo have more definition. For my perference I like the version without star reduction works better as the brighter stars help define the dust rather than in emission nebula when stars can overwhelm the nebula. You've put a shift in with this process and it shows, Bryan Thanks Bryan, that’s music to my ears! 😊👍 Tony Quote Link to comment Share on other sites More sharing options...
Sonyme Posted November 21 Share Posted November 21 I don't know or understand many of the technical terms used but I can say I prefer the image without star reduction. I don't think removing or muting the stars in the background undermines the target at all. In fact I think M45 looks very slightly blurred in the second image. The contrast between the stars and the nebulosity is really important and I think that stands out a little more in your first rendition. Gary 1 Quote Link to comment Share on other sites More sharing options...
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