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[RCC] M8 and M20 Requests for constructive critique · Antha Adkins · ... · 8 · 424 · 1

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Antha Adkins
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M8 and M20

https://astrob.in/7njkb9/0/

Link above (I hope) to astrobin page on image.

I'm still on the steep part of the PixInsight learning curve, and I'd appreciate feedback on what additional processing techniques I should be using.
Workflow: 
   WBPP
   DBE
   SPCC
   StarXterminator
   Stars - Histogram Transformation
   Nebulae - Generalized Hyperbolic Stretch and Curves
   PixelMath recombine

Camera geek info:    
    Canon EOS 60D in manual mode, 2 minute exposure, ISO 2000, custom white balance 3500K    
    Williams Optics Zenith Star 73 III APO telescope    
    Williams Optics Flat 73A    
    iOptron CEM40    
    Dell City, Texas Bortle 2-3 dark skies
Frames:    
    June 12, 2023        
        Run 1              
            34 2 minute lights             
            30 0.02 second flats             
            30 0.02 second flat darks        
        Run 2              
            82 2 minute lights             
            30 0.02 second flats             
            30 0.02 second flat darks             
           31 2 minute darks

Thanks for any suggestions you have!

Antha
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messierman3000 7.22
Oscar
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Personally, I think that you should not stretch the stars that much before recombination, it will look cleaner. I also think you should try to boost the black point a bit in your starless.

I recommend getting the BlurXterminator free trial, it makes a lot of difference in images. https://www.rc-astro.com/software/bxt/
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Antha Adkins
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Thank you!  I will try BlurXterminator.  Do you have any suggestions on where in the workflow to use it?  Thanks!
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Stefek 3.81
Stjepan Prugovečki
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Antha Adkins:
Thank you!  I will try BlurXterminator.  Do you have any suggestions on where in the workflow to use it?  Thanks!

As early as possible, just after background removal and color correction. It should be used to extract additional details from good data, not to compensate for low data quality.
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acubedsf 0.00
Antha Adkins
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Stjepan Prugovečki:
Antha Adkins:
Thank you!  I will try BlurXterminator.  Do you have any suggestions on where in the workflow to use it?  Thanks!

As early as possible, just after background removal and color correction. It should be used to extract additional details from good data, not to compensate for low data quality.

Thank you!  I'm looking forward to seeing what BlurXterminator can do!
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Antha Adkins
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https://astrob.in/7njkb9/B/

Thanks y'all for your advice!  I have spent some time learning BlurXterminator.  WOW!  What a difference!  I have discovered there seems to be a trade between having round stars with no halos and having lots of dim stars (this makes sense - getting rid of dim halos also gets rid of dim stars, and this is more a stretching observation than a BlurXterminator specific one). I made the choice to have nicer stars for this image.  If anyone knows a way around that, I'd love to learn the trick!  Any other suggestions?  Thanks!
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Antha Adkins
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https://astrob.in/7njkb9/C/

I decided to add NoiseXterminator to my processing flow as well, so I have a new version.  Any more comments before I make this my first public Astrobin image?  :-)
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AlvaroMendez 5.72
Álvaro Méndez
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Hi. I think your B revision has a very acceptable noise level. It is way more natural than the NXT’d one. Noise reduction is not always necessary and often turns the background and surrounding nebulosity into a mush. I personally love a little bit of grain on the images, just look at Hubble images and you will see it looks organic and natural in a photographic way. I would go ahead with your B revision.
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acubedsf 0.00
Antha Adkins
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Álvaro Méndez:
Hi. I think your B revision has a very acceptable noise level. It is way more natural than the NXT’d one. Noise reduction is not always necessary and often turns the background and surrounding nebulosity into a mush. I personally love a little bit of grain on the images, just look at Hubble images and you will see it looks organic and natural in a photographic way. I would go ahead with your B revision.

Thanks for your feedback!  I am fortunate enough to be able to occasionally get out to some really dark skies, so there wasn't much noise in this one.  I'll probably need NXT for the images from my driveway, though!  I also prefer the B revision as I think it's a little brighter.
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