Title: Aggressive NXT + BXT & Refined Color
Description:
The original version used moderate NXT settings. This new version uses much more aggressive NXT as well as BXT for detail and star enhancement.
Color processing was much more extensive with this version, to try and bring out more of the blue and mitigate the green a bit. (Sadly, my first round of trying to create V2 was lost when PI crashed!! This second attempt at V2 is just not quite as good, so there will undoubtedly be another version!)
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Title: Local and Micro Contrast Enhancements + Color Saturation and Rebalance
Description:
Tried to improve some of the local and micro contrasts. First went overboard, then backed off and kept only the more subtle changes.
Also worked on color saturation and attempted to re-balance the color (felt it was shifting too much towards an HOO-style palette in the last revision). Not real sure I like this version, and on wider gamut screens it is too saturated. (Works well for sRGB screens though.)
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Title: Additional Detail Enhancement and Chroma Noise Cleanup
Description:
Not yet sure if this takes things too far, and I feel I have lost some of the "the OIII faintly obscures the core details" aspect, but I did some additional detail enhancement for this version. A bit of MMT work and some slight curves.
Also applied ACDNR chroma only to clean up the background chrominance noise. Originally tried using NXT for this task, which worked well, however ACDNR worked better. ;) For as noisy as this data started out, I'm blown away by how little noise is in the final result. I'm lacking some of the electric vibrancy that I'd like in an image like this, but making do with what I have, its a pretty good result.
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Title: Color Tuning - Slightly Cooler/Pinker Version of Rev. D
Description: I started fiddling with the color again. I'm having a tough time deciding which I like better...the warmer toned, more orangish outer Ha regions of Revision D. Or the cooler, slightly pinker toned, slightly reddish outer Ha regions of Revision E.
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Title: Reintegrated - Full Data! (18h -> 43h)
Description:
Found some data I had missed, a lot in fact, more than double what I started with. Total time for SII and OIII went from ~25 subs to ~100 subs. and Ha went from 54 subs to 61 subs. This completely changed the dynamic of the image, and the OIII and SII were significantly stronger. The OIII now exhibits much stronger color throughout the image, and in some cases overpowers. Processing, especially color processing, ended up quite different.
Will probably revisit again, but I need to consider how. I think I caused some problems with the stars this time around. Tried removing stars...DO NOT like how that seems to utterly decimate the vast majority of the detail in the DSO!! So I may have to find other ways to protect the stars (with BXT, generating a well matched star mask becomes very difficult.) Not yet sure what to do about these issues.
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| Narrowband imaging |
| Central USA |
| ZWO ASI183/QHY183 |
| CMOS Imagers |
| Cloudy Nights |
| 1 - Tri-Band NB |
| 5 - Deep Sky Objects (DSO) |
| 7 - Emission Nebula |
| Narrow Band |
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