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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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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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| Thank you! I will try BlurXterminator. Do you have any suggestions on where in the workflow to use it? Thanks! |
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Antha Adkins: 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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Stjepan Prugovečki:Antha Adkins: Thank you! I'm looking forward to seeing what BlurXterminator can do! |
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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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| 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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| 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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Álvaro Méndez: 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. |
