DBXtract - a new PixInsight script for Dual-Narrowband Filters
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- Опубликовано: 8 сен 2024
- If you shoot OSC with Dual-Narrowband Filters then you should not miss this video - it will make your processing a lot easier!
Homepage for Repository Link: dbxtract.astro...
Video for Spanish speakers: • Extrae bandas de emisi...
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Askar Color Magic C Filterduo: Agena: bit.ly/3V4yhQb or HPS: bit.ly/4azcVA4
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Thanks for sharing, Sasha. I have been a follower of your channel almost since the beginning, and it is an honor that you are talking about my script.
I enjoyed your comment about our video 😁. Our channel features two friends chatting, which is why our videos are very, very long - we just chat and have a good time.
We will have more news and scripts soon. Thanks again.
what does the script actually do? especially with the "4" OIII channels (GB) present in the two pictures?
Hello, Sasha. I’m Teo, the second half of Astrocitas. You have no idea how thrilled Raúl was to see you highlight the launch of this Script. A million thanks for this video.
We found your comment about not understanding how we could talk for 45 minutes about such a small script very amusing. The truth is, when we decided to start the channel a year and a half ago, we had two main ideas in mind:
1- It had to feel like a chat between friends. Our philosophy is that we’re having a beer on a terrace while talking about these things that interest us.
2- We wanted to delve into the technical aspects. We’re not content with just repeating what’s being said; we aim to understand the scientific reasons behind it.
That’s why our videos are long. First, because as you mentioned, we’re chatting and having fun while talking about something we’re passionate about. And second, because we provide lengthy explanations of why things are the way they are.
For example, in this video, Raúl explains in detail how the different emission bands of the filters capture signals that are part of a different emission. This explains the mathematical formulas that need to be developed for precise extraction of each band.
So, between the chat and the explanations, our videos end up being long… We even have videos up to two hours long where we talk with various colleagues about different topics. We love it, what can I say… Haha. Interestingly, in the Spanish-speaking astrophotography community, they are very well received, probably because of that feeling of chatting among friends that we enjoy so much.
Anyway, after this unsolicited explanation, I just want to thank you once again for your support. And for bringing such a big smile to Raúl’s face. Thanks to you, we’ll see him in a happy mood for a while 😉
Hi Teo, I'm happy that you and Raul liked my video!
It is kind of great how many different styles we have on RUclips and so the same topic is covered in many different ways and there is one for each viewer type. And as you state, there is also a huge cultural aspect.
Much luck for your channel and keep having fun!!!!!
Will this script work with SiriL?
@@mikehardy8247 No, just PixInsight
Ciao Teo ciao Raúl, ho seguito il vostro video e mi è piaciuto molto, una bella chiacchierata tra amici dove comunque gli argomenti sono trattati con tanta passione, seriamente ed approfonditamente.- Bravi!! Grazie per il vostro fantastico lavoro svolto. Ciao da Damiano dalla provincia di Cuneo, Piemonte, Italia
@@viewintospace Darrn. Maybe I will get pixinsight.
Hi Sasch, first of all - your Spanish is great - but seriously - I am fluent - if you ever would like/need some translation into/from Spanish - let me know - there is also the AWS translation and transcription service - but my service if free to you 🙂
So, at first I was very excited about the DBXtract script, I have the Optonlong L-nHance, L-uLtimate, and the pricey Radian Triad Quadband filter. I have used Lukomatico tutoridal, which is quite involved but works - so having something a bit more systematic and methodical, the way you always do it - would be very welcome.
So here is the thing... while you covered the basics of using the script, it left me with the devil-is-in-the details, meaning (a) what ratios or further tweaking to I combine them, (b) do I create a synthetic luminance, (c) do I do it pre or post stretching, (d) do you just use ChannelCombination, LRBGCombination or PixelMath to mix - what post mixing processing do you recommend... I have been added for over 2 hrs trying to mix and match combination, ratios and not getting near as good as with Lukomatico's approach.
I am hoping you do a follow-up part two - to see how it all plays out end-to-end - you know: the Sascha Way :-) Danke.
Thanks Sasha! I just got the C1/C2 filters and will give this a go today.
Thanks, Sasha. By the way, you can opt for English closed captioning on Spanish videos. Not perfect but most of the way there. I did watch their video and understood most of it although it was a bit long.
… and I assume that I could combine my L-extreme with my Askar C2
I'm glad to know that it's possible to understand the videos with subtitles. The Spanish-speaking astrophotography community keeps growing, and they are our main audience. The videos are generally long, but we also publish short videos with tips and tricks.
Thanks for an excellent script Raul!
@@jackbernstein3029 yes, any dualband filter HO or SO
Script indispensable et rapide..!.il est top.
Great work Sasha
Thanks for the information
Very curious to give it a try with my M101 data from which I captured a few hours of D1 and D2 in a Bortle 3 area. By the way Sasha, I like this blue background better than the hunted house 😀
Just got my Askar D1 and D2 filters. And last night was able to get 20 frames each with D1 and D2 for M17 Nebula. In your video, before your use the dbxtract Script, you have two colour images. After doing the Stacking for the two images, and then load the two Stacked images into Pixlnsight, what processes have you used to get the two colour image ? Do we apply - ScreenTransferFuntion, GradX, SNCR, NoiseX, AutomaticBackgroundExtraction etc etc, to arrive at the two colour images, and now apply distract ?
The repository does not work for me, it fails to find any scripts. My pixinsight is updated and looks like other people have a problem with this too
Thanks for the script! Once you have it split into Ha, OIII and Sii, you would separately process and then combine back together with Piximath??? Sorry, just learning PI at this point.
Yes. Just have a look at my SHO tutorial, you would then start exactly from there: PixInsight SHO Tutorial 2024 - Cutting-Edge Astrophotography Processing!
ruclips.net/video/YMvgfmPkn-g/видео.html
I have several dual band filters for Ha & OIII. IDAS NBZ, Optolong L-enhance and L-extreme. Would one of these work in place of the C1, thus enabling me to get away with just purchasing the C2? If so, which one would you recommend? Thank you for the excellent video.
Sure - the L-extreme will work fine.
I have a procedural question. At what stage in the normal workflow of the images should DBXTRACT be used. Right after WBPP while still linear? If you had a workflow say of SPCC, BXT, NXT and SXT followed by GHS of the starless image where in this would you stop to run DBXTRACT?
Right after WBPP ( if the gradient should be similar) or after Gradient Correction (if gradient is different (e.g. one night per filter...)
@@viewintospace I was able to complete the extraction to the three grayscale images (After aligning and cropping the original masters). I then did a Masked Stretch, followed by Linear Fit and finally did the Channel Combine. It all worked but I really wasn't pleased with the final result, color-wise. I used the IDAS NBZ for the Ha-OIII image and the Askar C2 for the OIII-SII. I did have a significant difference in exposure times though. I used 5 secs for the NBZ and 30 secs for the C2. Should I have tried to use the same exposure time for each?
So many questions.... Why 5secs for NBZ????? Should be at least 30.... Then why a masked stretch? Don't stretch at all until it is really stretching time! Just do the channel combination - then use the AutoLinearFit from the toolbox and then all the usual stuff in the linear phase. If you do not like the colors, use after stretching the Narrowband Normaliztaion Process of Bill Blanshan and then some nice scripts out of the toolbox (watch my Toolbox video)
It seemns not to work anymore getting Network error: Could not resolve host: DBXtract_0.4.zip
If I understand correctly, this script only works for a few cameras? There are a lot of DSLR cameras out there, I have no hope iof getting support for my Olympus e-m5 full spectrum camera.
I would agree, there is definitely no hope that they would add it - but why not try with another camera setting - I can not imagine that it matters that much....
Thank you for this (and previous!!) tutorial! would it e a way to change the wavelength on he Sii+Oiii filter? my second filter is a Sii+Hb, I suppose I'm losing data... thank you!
I would not risk using the script in this way. At the end, the script is convenient, but splitting and recombining the pics manually is also not such a big thing!
@@viewintospace thank you for answering 🙏🏼 I need to learn about this, I’m gonna check your videos again 😉
Merci!!
A really simple question I still don’t find the answer is about the splitting… to extract Ha and Oiii from a dual alpt for exemple, I just need to separate RGB channels and use the red for Ha and a 0.5*G+0,5*B for Oiii or it should be more complex? (And same for Sii/Hb)
I still Can’t be sure about that 🙄🤔
@@leboot It is 100% exactly that easy
@@viewintospace, why am I looking for difficult ways… 😅
Thank you for everything, before, now, later 🙏🏼
Would you be able to use this script if you only have the Optolong L-enhance? To extract Ha and OIII? And create a synthetic SII? From your Red and Blue channel?
I guess you can do it to extract Ha and Oiii, and you can create an H-O-O pic afterwards. BUT: There is NO such thing as synthetic Sii!!!!!!!!!!!!!!!!!!!! And I don't care how many other RUclipsrs want to sell such a concept - you can NOT create something synthetically that you do not have! To explain: You can create synthetic Lum by combining your R, G and B pics - together it creates the full spectrum and hence is equal as if you would have shot without filter (regarding mono shooting). But with Sii - if you do not shoot with an Sii filter you can not know how the Sii emission looks like. This information is not in your Oiii and Ha data. So all you can do is create something fictional to make your pic look pretty, but that is a clown show and no synthetic Sii 😁. Hope that helped.
A question - I have just acquired second filter so now have Antlia ALP-T and Altair Sii/Oiii 4nm filters. I am new to the idea of using more than one data set. I have watched the processing video you mention and note that star alignment needs to be taken care of. Should I be stacking data from both filters together in WBPP, or separately? How do I do the star alignment? Many thanks Sasha.
You can do it somehow in WBPP, but I'm not a specialist as I stack in APP. But what I can tell you is that in PixInsight you can align multiple pictures with the process ImageRegistration -> StarAlignment.
@@viewintospacethanks! I will look into that process😊
Hi Sasha, in your experience how does this stack up (pun intended) against doing the separation in APP? This script looks easy, but is it also better?
From my perspective it does not have to be better, but the same good, given it will remove the work to combine the 4 Oiii pics from you. And I would assume it is equally good....
Is something wrong with the script now? A few days ago I had it installed and it was working fine. I have just now tried using it again after watching your video and I have found that the script has disappeared from my PixInsight and when I try and re-install the script nothing happens, it won't reinstall even after removing the script from repositories. It is very strange problem that I am having.
I am also having the same issue.. Installed it a couple of days ago and now still shows up in the repositories but not in the scripts..??
I perfectly understand. I have to deal with 8 cats wanting my seat, lap and attention.
Works still fine for me but they did an update to version 0.4 - try updating - maybe that helps!