Fix Blue Bloat and other Chromatic issues in PixInsight using BlurXTerminator
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- Опубліковано 1 сер 2024
- Chromatic aberrations from refractors, different seeing conditions in color channels (mono imagery) and focus issues can lead to color fringing around stars. This video demonstrates taking advantage of BlurXTerminator's reduce star halos capability to counter or moderate the effect.
As mentioned in the video here are the affiliate links:
www.rc-astro.com/software/bxt...
Here is the link for StarXTerminator as well:
www.rc-astro.com/software/sxt...
00:00 Intro
02:15 The problem and WBPP setup
03:45 Results
04:15 Typical result (green!)
05:08 Dynamic Background Extraction
06:42 SPCC
07:47 The Blue Bloat
07:58 BlurXTerminator
08:55 Channel Extraction
09:53 Channel Combination (Results)
10:46 Comparison (Before/After) subtle
11:33 A little more aggressive
12:55 There you go Result
13:20 Being Picky about Result
14:20 StarXTerminator for star mask
16:32 Final Comparison and Result
More at:
AdamBlockStudios.com
See the Reviews:
www.adamblockstudios.com/cate...
Those just starting out in PixInsight will enjoy FastTrack Training!
www.adamblockstudios.com/cate...
NEW NEW: AdamBlockStudios.com has released Stretch Academy! No other content creator has a dedicated course on this critical part of image processing. See: www.adamblockstudios.com/cate...
#PixInsight #BlurXTerminator #NoiseXTerminator #StarXTerminator #aberration #neuralnetworks #rosette #AdamBlockStudios #refractor #focus
Thanks, Adam. I've been fumbling around trying to do exactly this, and you clarified some particulars for me.
Thanks for watching!
He must be using a Sharpstar61EDPHii and a 533mc. I have the exact issue in and only in my blue channel with the Sharpstar61edphii and the zwo 533mmPro. My blue channel is horrible. I’ll be trying to salvage my data with this method later! Thanks Adam. I’m loving being a member of your site 👍🏽
Thanks for watching!
When you use literal Pedestal settings don't you need to input a value? Useful video. I understand you were probably wanting to show the approach/method as well as fixing the issue but it's possible that the Correct Magenta stars script may help tidy up the purple halos.
Very interesting, I don’t suffer from these blue star halos myself. The thing that intrigued me with this video was when you did a preview window for spcc you selected a large area including stars, whereas I have been trying to find an area with no stars, which sometimes is very difficult depending on the image. I guess I don’t have to be so anal about that? Maybe I need to put my hand in my pocket and buy one of your memberships on your website! 😂
Yes, you should buy access to my tutorials.. because I explain the answer to this exact question here: www.adamblockstudios.com/articles/spcc-background-neutralization You can see in the picture how stars are NOT included in the calculation. I demonstrate this ..explain the reason why. Not a single content creator nor developer demonstrates this kind of information. :)
Ok fine, I’ll look into it 😂. I’m the kind of person that try’s to learn by doing and starting to have pretty good results, but I’d like to get more in depth info and the best practices for pixinsight. I’ve been seeing online more and more people really praising your site. I just have the efw next on my Astro shopping list then I’ll join the herd 👍
Side question, I’m just on your site, which membership should I get? I currently only use pixinsight for all processing so assume the ‘pixinsight fundamentals’ is the one I need?
@@ianwatson8599 Yes, PixInsight Fundamentals is what you want. Later...if you want even more you can consider Horizons. :) Thank you very much for the consideration!
What if you inverse the image and run SCNR on it? Recently I saw another yt video (can't remember where) addressing this problem. One would expect that if affects also other regions extensively, but surprisingly didn't.
Right..that would not be star targeted such as what BXT allows.
I don't have Pixinsight yet but I like these videos 😅
Btw how is this different than using defringing option in camera raw filter of Adobe PS? It does a surprisingly good job with just one click!
BXT is a restoration algorithm. This is how it is different...it is attempting to reconstruct the PSF (the star intensity distribution). PS Defringing is an edge modification... not a restoration.
I suffer from "rainbow stars" using an APO and mono cam. I wonder why because WBPP does separate aligning and stacking per individual R/G/B channels and even BXT does not fix that. So the color fringes are not concentric but different in one corner to another. Is this due to optics - and probably to fix in postprocessing?
Yes...the optics. The issue is with refractors the light of different wavelengths does not come to focus equally (unless you pay a lot of money to minimize this aberration). When you add other optical aberrations on top of this fringing effect of refractors.. you get the result you mention (especially far from the center of the frame). If the optical aberrations are severe enough... alignment will not fix this. BLurXTerminator can help because it understands these kinds of aberrations when it does its star correction thing.
@@AdamBlockThank you Adam! I switched to refractor from Newtonian and experience the same, especially in edges. I will try your approach. I love your “problems are inspirations for solutions” statement 😀
Wouldn't it be easier to use the PI script: CorrectMagentaStars?
That just changes the color... not the actual PSF.
My Pixinsight not working, it's overdimension. I see just 1/3 of the scren
Sorry to hear that. Typically this happens when using multiple monitors or a device with a very low resolution.
BlurX AI version 3. Are you beta tester?
To me, this is exceptionally minimal change. It may be UA-cam of course.
Perhaps... but keep in mind... you do not want to completely eradicate the color...just lessen it. This technique will give you the power to go much farther if desired.
@@AdamBlock ok Adam but the other thing is I have no intentions of buying Pixinsight. Can the method be used in other software?
@@earthling-fh2mg Not by virtue of BlurExterminator which is only available in PixInsight. However, the principle works in general. In Phtooshop (or whatever) you can operate on a color channel is do operations like this. It is just that BlurXTerminator does the job very well since it is trained to work with stars and their attributes as understood by the neural network.
@@AdamBlock cheers Adam
I think I have to have all RC tools.
RC would agree (and so would I).