Great video. You made me realize how much I've yet to learn about PixInsight. I'm ordering a dualband filter and hope to learn from your video. Thanks.
Thank you Shawn for such informative videos so well presented. I have learnt more about Pixinisght through your videos than any other out there. Great result on the Cygnus Wall by the way.
Just discovered this - really helpful as an advanced introduction to what you can do with masks. Faux SHO is nice as well! I'm learning more from your videos than from any of the 'big name' PI ambassadors.
Hi Shawn, just a big thanks for all your hard work. Being pretty new Astrophotography and PI I have slowly been going back over your videos to try and get my brain to remember stuff. Having only a OSC this was a great video to learn from and also understand masks better too. Cheers John.
Awesome image, Shawn, and a really helpful video! Just what I was looking for. I have been shooting different objects with the ZWO ASI 294MC Pro and a STC Astro Multispectra filter (Ha, Hb, OIII and SII). Now, I want to experiment with the Hubble Palette :-). Keep up the good work and clear skies!
This video is just what I was looking for! Very well presented for a new PI user like me as well. I have the L-Pro and L-enhance to go with my asi533mc pro and RASA 8". Cant wait to try this out on my data! Thanks!
Nice method, Shawn. I've seen others who only capture Ha and OIII and skip capturing SII altogether and just create a synthetic SII to help the pull off a Hubble Palette type of image. Excellent final image, but did StarNet give you a different shade of blue? It looked like there was a big leap and you had a nice shade of blue after StarNet.
Eagle eye Chuck! lol. Starnet didn't change the blue, that was me. Unfortunately the vid recording needed some editing in that section (among others!) where I messed up a bit. So there's one colour adjustment step you don't see which accounts for the change. I didn't want to go back and re-record! lol.
Used this as a guide to make my first SHO image. And it worked perfectly. Thank you very much! Only thing I did different was I did deconvolution (was needed for my image) and combined the data as SHO in AstroPixelProcessor.
You got skills!!! I just tried your process on the Trifid/Lagoon Nebula (I have 60 x 60s shots using the RedCat51, ASI2600MC-Pro and the Triad Ultra Quad Band). For a first time go, definately not bad. I have alot more to learn. Thank you for putting out these videos for us newbs who are just getting started on our journey.
Another great job ! I could not get the same camera as you but did pick up a QHY247c, L-Enhance filter is on the way also, no one had the L-Extreme in stock. BTW. Your starnet ++ worked perfectly. I already had a fast computer which took starnet 24 seconds to work. But with enhanced techniques it too 11 seconds.
This video has convinced me I don't need to switch from my current imaging rig of L enhance/L Pro filter + 2600MC pro to a Mono 2600mm + Ha/OIII/SII. The mono imaging combination would result in more than $4400 +tax. Or even going for a $1100 Triad Ultra filter for my OSC camera. THANK YOU!
Thanks for sharing that technique Shawn. I have been doing something similar in APP to separate the Ha and Oiii signals on my l-enhance filter and then recombine in pixinsight which works well but I couldn’t work out the right combo for using pixinsight only so now I know 👍🏼
Great video, I'm a relative newbie, but have been learning the finer points of pixinsite from you - had no idea you could change the characteristics of an extracted mask. Thank you.
Oh wow, thats a great work! Would be really interesting to see the difference of the Hubble palette coming from L-Extreme compared to L-enhance filter. I mean regarding Hubble palette result.. CS!
Tried this again with the new version of PI, they changed the way pixelmath looks or works? I click apply and all I get is an error that there is no active image window.
Shaun, you have lots of great tutorials, I've learned a lot in the 2 short years since I started with a camera tripod, Orion star tracker and a Canon T3i. Since then I added a HEQ5, ASIAir+, and guiding. But I'm not at the point where I want to spend $2400 for a camera, then another $2000 or more on a larger scope. I'm using a WO Z61 with either my T3i, or a ZWO 585MC OSC. I'd like to see you do some videos with less expensive stuff. What do you think, for us budget astrophotographers?
I'm testing the iOptron Skyhunter goto mount which is less costly. I would have to get a low cost camera option. It's a good idea. Just need to figure it out. Cheers.
I see this video is a year old. The pixel math dialog has changed and looks different. Can you explain or update how these settings appear in the new dialog box?
The look of the pixelmath tool changed in later PI updates. The pixelmath would still be ok though. There's another way to do this as well which works good. I'll try and get around to doong a video on it. Stay tuned!
Shawn, Just to clarify a bit (and I see someone else asked I think). Is what you are calling your master light frame, the Integrated Master after Calibration, Debayer and Registration (Star alignment)? Am thrown off a bit by the more mono appearance if so. Also, why assign SII to Red, when it is predominantly Ha? (doesn't really matter as long as you keep them straight) Appreciate the effort in putting the video together. Thanks...
Hi Jay - yes the master light is the integrated master after calibration, debayer and registration. It is indeed a colour image (RGB). I think it's just the video compression throwing things off a bit and giving it that look lacking colour. If you look close though you can see some colour in it, red mostly. As for assigning SII to red, in a typical/standard SHO combination workflow the SII is assigned to the red channel, Ha to the green channel and OIII to the blue.
Great job on these two targets Shawn, I hope to shoot the veil nebula this evening, using the L-Extreme with the QHY247C. I finally think I have the back focus right. Not sure if you are using a FR switch the 100 or not. But I am with the stellarvue 102. Let's see what happens. Going for 40, 5 minute subs. Bruce
Super Bruce! Would love to see your result when complete. The Esprit 100 doesn't use a reducer, just a field flattener which keeps it native 550mm FL. The Stellarvue will do a fine job. Good luck tonight and clear skies!
Quite an involved proccess, I see. Would using a monochrome sensor and a filter wheel be easier to work with? On the other hand, having a single filter and an OSC sensor is intriguing... (and I suppose much cheaper!)
A mono can with filters would be ideal. This was for those who only have OSC cam/filter and want to try making a Hubble palette image. Something not done before with OSC data.
@@VisibledarkAstro from a quick look, a set of filters, filter wheel and a monochrome cooled camera easily would reach 3000 Eurodollars. Not a small amount. So, the promise of a 1200 Eurodollar set-up (an OSC camera, a nosepiece and a fixed 3-band or 4-band filter) is quite attractive
Thanks for posting the video, I tried this using zw01600 OSC with IDAS Nb1 filter on the Heart Nebula but didn't see any change in colour . Any thoughts on why that might be?
My starting image looks way different than yours in that it is much redder (ASI294MC Pro). So, following your steps, I didn't get anywhere close to the Hubble Palette. Any thoughts about that? I stack and integrate using APP and process in PI
Hi Shawn, I bought one of your beginning imaging courses and it was excellent. You are a great teacher. The concept discussed here is also an excellent idea, so good that I was trying to follow along and do something similar with one of my images but ... my pixel math process looks totally different, perhaps because you have modified it in some way, or maybe because PI keeps improving its software. How does one generate the pixel math formula so that it corresponds to what we see in your video?
Thanks for your videos, they are very educational, I am starting to image with a triband filter also, but I have a huge question of how to debayer , for this process that you are showing your master light is raw or debayerized? Are you planning to show the full preprocessing workflow with this settings? Thank you in advance for your help
Hi Shawn. Awesome video as usual! I see when you run starnet it completely removes your stars. For me I just tried on multiple images of mine and there is leftovers on all my images. Is there something extra I need to do to remove everything?
Hey Bryan - Starnet isn't perfect for me either. There are artifacts left behind sometimes. If they are really bad, you could try using the pant tool in Pixinsight to clean things up. Hope this helps!
Excellent Video Thanks for sharing. I am still having problems getting any real cyan colour out of my L-enhance images the Red ha seem so dominant. Any thoughts on that?
Your videos are great. I'm just starting out on my PixInsight journey. I have a image of the Pacman Nebula taken with the Zwo 533MC Pro and the Optolong L-Extreme. If I wanted to do a HOO, what would I put in Pixel Math?
So great Tutorial. You got a new subscriber! By the way I'm wondering about something.. Do you think it makes any sens to try to recover the SII channel by taking two sequences, one with this dualband, and one with a selective 7nm Ha, and then remove via a pixelmath subtraction the Ha Channel from the dualband channel. You should get the SII and OIII signal remaining . Which should be a very interesting signal to add to the Dualband. You gain both SII and a stronger OIII Am I wrong?
Hi Shaun. I am one of your avid followers and think your videos are simply superb and most educative! I am currently attempting the Hubble Palette OSC colour processing process as outlined in your video. My image is Eta Carina, taken with the RedCat 51, Canon 60Da and L-Enhance filter. I am having problems reading the Pixel Math process details and settings off the computer screen (size is too small). Is there a downloadable process that you can provide, or write out the settings, so that I can accurately replicate them. Thanks in advance for the help and thanks once again for your brilliant video tutorials. Mupanga Lusaka, Zambia
Nice video Shawn. To clarify. You split channels into RGB. Then assigned R to S G to H and B to O... added a little pixel math. I’m confused why it gave a different result. The video had stated that and RGB would be the SHO so same image???
Great video! I was just thinking over the weekend, how I could separte my picture of the eagle nebula taken with a OCS and the OPT Triad Ultra quad-band filter with pixelmath into Ha, OIII and SII and create a Hubble like picture :-) The idea was to use the sensitivity per wavelength per color to define the ratio for the wavelength of the emmission lines and then calculte out of the original R, G and B the picture for the Ha, OIII and SII. Unfortunately the result was not satisfying. I assume the issue is, that I started with the fully callibrated and stacked RGB picture. Because of the impact of the flats (not really neutral), the color ratio for Ha, OIII and SII was changed, so that my transfer matrix was wrong. I may have to start doing the segregation already with subframes (debayer, RGB split), same for the flats. Then callibrate them and stack them seperatly,. I'm only not sure of the impact darks and bias, if I use them on already debayered picture.
Hi Shawn!, did you use the master file from the optolong l pro filter? or what master files is this? i just saw your last video about the cygnus wall and in the end you have a final image with more red, I have tried this using only my l enhance data but I couldn't obtain any blue in my image after the pixel math operation.
Two different processing techniques between the videos and images. The other video with the Cygnus Wall being more red, is processed different. And in that one I did use the Lpro for star colour only. This video the process is a split channel, remapping, false colour, and you'll get a different colour effect. The blue as example, may not be very prominent, and has to be teased out, hue adjustments etc for the false colour look.
Visibledark Astro thanks so much! Yes , I was referring to the file that you originally started to work in this video, I think it’s a stack of the l pro or a stack of the l enhance ?
I know this is an older video... but there are a couple of things that I just can't figure out. First of all, the original calibrated L-eNhance master should have a LOT more red in it... NGC7000 is rich in hydrogen and it appears very, very red through a dual narrowband filter... like "in your face" red! Second, extracting the RGB channels and renaming them Sii (R), Ha (G), Oiii (B) and then recombining them isn't really accomplishing anything. The Pixelmath is adding a little bit of Ha to the green channel (at the expense of Oiii); but recombining is going to result in almost the exact same HOO image that you started with. To approximate SHO, most of the Ha needs to actually move out of red and into green (you can't just name it Sii and expect it to stop behaving like Ha). I could be wrong; but I suspect that the original "master" was altered beforehand to make this process work.
Thanks for tuning in! Please consider subscribing to my astro channel! Clear skies.
I did ! Thank you.
This is huge Shawn. Brilliant.
Thanks! I didn't think of it as brilliant but I like the sound of that! lol. Thanks for tuning in Trevor. Cheers.
'Hubble Hybrid' might be a good label for these images...amazingly helpful tutorial, Shawn! Well done! :)
Thanks for the comment! Yes Hubble Hybrid would be good. Agreed! 😀
Brilliant stuff Shawn! Thanks for sharing.
Great video. You made me realize how much I've yet to learn about PixInsight. I'm ordering a dualband filter and hope to learn from your video. Thanks.
Thanks for this Shawn, Pix is such a huge learning curve and you have helped me alot with your videos....
Hi Gary - awesome! Thanks so much for letting me know. Clear skies!
Thank you Shawn for such informative videos so well presented. I have learnt more about Pixinisght through your videos than any other out there. Great result on the Cygnus Wall by the way.
Awesome! Thanks Brian. Glad the videos have helped. Cheers!
Great video Shawn.. and so relevant given the advancements in OSC and single filter narrow band!!
Thanks Jay! Clear skies!
Shawn you are brilliant!!
Just discovered this - really helpful as an advanced introduction to what you can do with masks. Faux SHO is nice as well! I'm learning more from your videos than from any of the 'big name' PI ambassadors.
Great stuff as usual Shawn
There's easier ways to this now! Lol.
Hi Shawn, just a big thanks for all your hard work. Being pretty new Astrophotography and PI I have slowly been going back over your videos to try and get my brain to remember stuff. Having only a OSC this was a great video to learn from and also understand masks better too. Cheers John.
Hey John - thanks for the comment! Glad the videos have been helpful. Clear skies! :)
Awesome image, Shawn, and a really helpful video! Just what I was looking for. I have been shooting different objects with the ZWO ASI 294MC Pro and a STC Astro Multispectra filter (Ha, Hb, OIII and SII). Now, I want to experiment with the Hubble Palette :-). Keep up the good work and clear skies!
Super! Yes the STC filter would work equally as well, perhaps a bit better with it capturing SII even. Cheers!
This video is just what I was looking for! Very well presented for a new PI user like me as well. I have the L-Pro and L-enhance to go with my asi533mc pro and RASA 8". Cant wait to try this out on my data! Thanks!
Just wondering if your starting point image was a fresh stack or was there any processing done? ABE/DBE, etc?
Shawn
Thank you very much
This is a game changer for me as I has same filter & OSC
Cheers mate
You're welcome! It is neat to be able to do it with OSC data. Cheers.
Very cool processing tips Shawn. I may try this with the Elephant Trunk
Thanks Shawn, really interesting idea!
You're welcome. Thanks for watching! Cheers.
I love it. Congrats! I am looking forward to trying it with l-extreme
Awesome technique, I tried it and it works so well. Thanks!
Brilliant video. Extremely useful!
Thanks! :) Clear skies!
Nice method, Shawn. I've seen others who only capture Ha and OIII and skip capturing SII altogether and just create a synthetic SII to help the pull off a Hubble Palette type of image. Excellent final image, but did StarNet give you a different shade of blue? It looked like there was a big leap and you had a nice shade of blue after StarNet.
Hi Chuck, it's you again :-). Why I get the feeling that I'm stalking you? :-D
@@beatriceheinze2294 We need to stop meeting like this, lol.
Eagle eye Chuck! lol. Starnet didn't change the blue, that was me. Unfortunately the vid recording needed some editing in that section (among others!) where I messed up a bit. So there's one colour adjustment step you don't see which accounts for the change. I didn't want to go back and re-record! lol.
@@ChucksAstrophotography 😂
This is fantastic. Thanks for the video Shawn.
Used this as a guide to make my first SHO image. And it worked perfectly. Thank you very much! Only thing I did different was I did deconvolution (was needed for my image) and combined the data as SHO in AstroPixelProcessor.
Glad it helped!
Another great video, Shawn ! Very informative
You got skills!!! I just tried your process on the Trifid/Lagoon Nebula (I have 60 x 60s shots using the RedCat51, ASI2600MC-Pro and the Triad Ultra Quad Band). For a first time go, definately not bad. I have alot more to learn. Thank you for putting out these videos for us newbs who are just getting started on our journey.
Great! I've just bought the clip in L-Enhance filter and I was wondering how to do this on pixinsight. Thx for the excellent video!
Another great job ! I could not get the same camera as you but did pick up a QHY247c, L-Enhance filter is on the way also, no one had the L-Extreme in stock. BTW. Your starnet ++ worked perfectly. I already had a fast computer which took starnet 24 seconds to work. But with enhanced techniques it too 11 seconds.
This video has convinced me I don't need to switch from my current imaging rig of L enhance/L Pro filter + 2600MC pro to a Mono 2600mm + Ha/OIII/SII. The mono imaging combination would result in more than $4400 +tax. Or even going for a $1100 Triad Ultra filter for my OSC camera. THANK YOU!
Shawn's pallette! Thanks for the great tips!
Good one! I like it! :) lol
New to the Channel, Thanks for the video and I will try it !
Welcome to the channel! Thanks for subscribing. I hope my videos are helpful! Cheers.
Thanks for sharing that technique Shawn. I have been doing something similar in APP to separate the Ha and Oiii signals on my l-enhance filter and then recombine in pixinsight which works well but I couldn’t work out the right combo for using pixinsight only so now I know 👍🏼
Awesome! Glad this helps. Cheers!
Great video!
Thanks!
Thank you so much. This tutorial is amazing. I have learned a lot even for my normal photos
Great video, I'm a relative newbie, but have been learning the finer points of pixinsite from you - had no idea you could change the characteristics of an extracted mask. Thank you.
I just found your channel! Fantastic content! I subscribed. Best regards! 😀🔭
Phew! You go fast!
Good stuff for learning PI
Oh wow, thats a great work!
Would be really interesting to see the difference of the Hubble palette coming from L-Extreme compared to L-enhance filter. I mean regarding Hubble palette result..
CS!
Tried this again with the new version of PI, they changed the way pixelmath looks or works? I click apply and all I get is an error that there is no active image window.
Shaun, you have lots of great tutorials, I've learned a lot in the 2 short years since I started with a camera tripod, Orion star tracker and a Canon T3i. Since then I added a HEQ5, ASIAir+, and guiding. But I'm not at the point where I want to spend $2400 for a camera, then another $2000 or more on a larger scope. I'm using a WO Z61 with either my T3i, or a ZWO 585MC OSC. I'd like to see you do some videos with less expensive stuff. What do you think, for us budget astrophotographers?
I'm testing the iOptron Skyhunter goto mount which is less costly. I would have to get a low cost camera option. It's a good idea. Just need to figure it out. Cheers.
I see this video is a year old. The pixel math dialog has changed and looks different. Can you explain or update how these settings appear in the new dialog box?
The look of the pixelmath tool changed in later PI updates. The pixelmath would still be ok though. There's another way to do this as well which works good. I'll try and get around to doong a video on it. Stay tuned!
learned a lot, stupid questions how do you do before after so quickly while doing noise multiscaltelineartransform
Hi Arif. On PC you hold the CNTR, SHIFT keys and press Z key to flip back and forth. On MAC I believe its COMMAND key, SHIFT and Z. Hope this helps!
@@VisibledarkAstrothank you so much
I just saw your image on NASA’s Universe view screen post on Instagram. Nice 👍🏼
Wow...thank you for sharing this technique...will definitely try this out...will similar results occur using the LeXtreme filter?
I found the Lenhance easier to do SHO with. But it can be with Lextreme data as well.
Shawn, Just to clarify a bit (and I see someone else asked I think). Is what you are calling your master light frame, the Integrated Master after Calibration, Debayer and Registration (Star alignment)? Am thrown off a bit by the more mono appearance if so. Also, why assign SII to Red, when it is predominantly Ha? (doesn't really matter as long as you keep them straight) Appreciate the effort in putting the video together. Thanks...
Hi Jay - yes the master light is the integrated master after calibration, debayer and registration. It is indeed a colour image (RGB). I think it's just the video compression throwing things off a bit and giving it that look lacking colour. If you look close though you can see some colour in it, red mostly. As for assigning SII to red, in a typical/standard SHO combination workflow the SII is assigned to the red channel, Ha to the green channel and OIII to the blue.
Great job on these two targets Shawn, I hope to shoot the veil nebula this evening, using the L-Extreme with the QHY247C. I finally think I have the back focus right. Not sure if you are using a FR switch the 100 or not. But I am with the stellarvue 102. Let's see what happens. Going for 40, 5 minute subs. Bruce
Super Bruce! Would love to see your result when complete. The Esprit 100 doesn't use a reducer, just a field flattener which keeps it native 550mm FL. The Stellarvue will do a fine job. Good luck tonight and clear skies!
man i wish this was posted recently haha. my pixelmath doesnt work. comes up with no options to place an image in a spot
Quite an involved proccess, I see. Would using a monochrome sensor and a filter wheel be easier to work with?
On the other hand, having a single filter and an OSC sensor is intriguing... (and I suppose much cheaper!)
A mono can with filters would be ideal. This was for those who only have OSC cam/filter and want to try making a Hubble palette image. Something not done before with OSC data.
@@VisibledarkAstro from a quick look, a set of filters, filter wheel and a monochrome cooled camera easily would reach 3000 Eurodollars.
Not a small amount.
So, the promise of a 1200 Eurodollar set-up (an OSC camera, a nosepiece and a fixed 3-band or 4-band filter) is quite attractive
Thanks for another great video
Thanks for posting the video, I tried this using zw01600 OSC with IDAS Nb1 filter on the Heart Nebula but didn't see any change in colour . Any thoughts on why that might be?
Off hand no. It could be due to the filter. But I'd have to see the unstretched master and try it in PixInsight myself.
@@VisibledarkAstro could I send it to you?
Yes. Upload it to the cloud and send me the download link. Shawn @ visibledark.ca
@@VisibledarkAstro thanks so much, thats been sent , let me know if you got it.
Nice. Some cool PI tricks :D
My starting image looks way different than yours in that it is much redder (ASI294MC Pro). So, following your steps, I didn't get anywhere close to the Hubble Palette. Any thoughts about that? I stack and integrate using APP and process in PI
Nice idea!
Give it a try! Thanks for tuning in! :)
Excellent info Thanks Shawn
Hi Shawn, I bought one of your beginning imaging courses and it was excellent. You are a great teacher. The concept discussed here is also an excellent idea, so good that I was trying to follow along and do something similar with one of my images but ... my pixel math process looks totally different, perhaps because you have modified it in some way, or maybe because PI keeps improving its software. How does one generate the pixel math formula so that it corresponds to what we see in your video?
Is this different than doing the extract option in Astro Pixel and then RGB combine, or is it identical in theory?
Thanks for your videos, they are very educational, I am starting to image with a triband filter also, but I have a huge question of how to debayer , for this process that you are showing your master light is raw or debayerized? Are you planning to show the full preprocessing workflow with this settings? Thank you in advance for your help
Could this be done with the L-Extreme as well? Or is it to isolating
Hi Shawn. Awesome video as usual! I see when you run starnet it completely removes your stars. For me I just tried on multiple images of mine and there is leftovers on all my images. Is there something extra I need to do to remove everything?
Hey Bryan - Starnet isn't perfect for me either. There are artifacts left behind sometimes. If they are really bad, you could try using the pant tool in Pixinsight to clean things up. Hope this helps!
Hi shawn
Can u help combine osc with light pollution filter and optolong l- enhanced narrowband filter in pixinsight.
Thxs Rashmi
Nice one Shaun, bit by bit it's starting to sink in :) Nice Fauxsho image
Excellent Video Thanks for sharing. I am still having problems getting any real cyan colour out of my L-enhance images the Red ha seem so dominant. Any thoughts on that?
Your videos are great. I'm just starting out on my PixInsight journey. I have a image of the Pacman Nebula taken with the Zwo 533MC Pro and the Optolong L-Extreme. If I wanted to do a HOO, what would I put in Pixel Math?
This is one way to do it.
R: Ha
G: Ha*.01+(O3*~.05)
B: O3
@@VisibledarkAstro thanks Shawn
So great Tutorial.
You got a new subscriber!
By the way I'm wondering about something..
Do you think it makes any sens to try to recover the SII channel by taking two sequences, one with this dualband, and one with a selective 7nm Ha, and then remove via a pixelmath subtraction the Ha Channel from the dualband channel. You should get the SII and OIII signal remaining . Which should be a very interesting signal to add to the Dualband. You gain both SII and a stronger OIII
Am I wrong?
can you make a hubble pallet image out of quad band filter in osc camera? f Or do you recommend duel band filter?
using the same channel splitting
Hi Shaun.
I am one of your avid followers and think your videos are simply superb and most educative!
I am currently attempting the Hubble Palette OSC colour processing process as outlined in your video.
My image is Eta Carina, taken with the RedCat 51, Canon 60Da and L-Enhance filter.
I am having problems reading the Pixel Math process details and settings off the computer screen (size is too small).
Is there a downloadable process that you can provide, or write out the settings, so that I can accurately replicate them.
Thanks in advance for the help and thanks once again for your brilliant video tutorials.
Mupanga
Lusaka, Zambia
Brilliant!
Nice video Shawn. To clarify. You split channels into RGB. Then assigned R to S G to H and B to O... added a little pixel math. I’m confused why it gave a different result. The video had stated that and RGB would be the SHO so same image???
real nice man, im looking at moving to ccd one shot colour from my dslr. Wonder if you can produce similar results with photoshop?
Most likely yes. It would be similar to what I did but using photoshop's channels and remapping things.
Excelente Vídeo.
Con qué filtro se obtiene mejores resultados Optolong L-eNhance o L-eXtreme?
Tu respuesta sería de enorme ayuuda.
Gracias
Great video!
I was just thinking over the weekend, how I could separte my picture of the eagle nebula taken with a OCS and the OPT Triad Ultra quad-band filter with pixelmath into Ha, OIII and SII and create a Hubble like picture :-)
The idea was to use the sensitivity per wavelength per color to define the ratio for the wavelength of the emmission lines and then calculte out of the original R, G and B the picture for the Ha, OIII and SII.
Unfortunately the result was not satisfying. I assume the issue is, that I started with the fully callibrated and stacked RGB picture. Because of the impact of the flats (not really neutral), the color ratio for Ha, OIII and SII was changed, so that my transfer matrix was wrong. I may have to start doing the segregation already with subframes (debayer, RGB split), same for the flats. Then callibrate them and stack them seperatly,. I'm only not sure of the impact darks and bias, if I use them on already debayered picture.
The Nielsen Palette!
lol. Good one!
We should call it the Nielsen Palette!
Absolutely! love it! :)
Hi Shawn!, did you use the master file from the optolong l pro filter? or what master files is this? i just saw your last video about the cygnus wall and in the end you have a final image with more red, I have tried this using only my l enhance data but I couldn't obtain any blue in my image after the pixel math operation.
Two different processing techniques between the videos and images. The other video with the Cygnus Wall being more red, is processed different. And in that one I did use the Lpro for star colour only. This video the process is a split channel, remapping, false colour, and you'll get a different colour effect. The blue as example, may not be very prominent, and has to be teased out, hue adjustments etc for the false colour look.
Visibledark Astro thanks so much! Yes , I was referring to the file that you originally started to work in this video, I think it’s a stack of the l pro or a stack of the l enhance ?
Starnet doesn't appear to work with AMD Ryzen processors, but other than that a very good tutorial.
I know this is an older video... but there are a couple of things that I just can't figure out. First of all, the original calibrated L-eNhance master should have a LOT more red in it... NGC7000 is rich in hydrogen and it appears very, very red through a dual narrowband filter... like "in your face" red! Second, extracting the RGB channels and renaming them Sii (R), Ha (G), Oiii (B) and then recombining them isn't really accomplishing anything. The Pixelmath is adding a little bit of Ha to the green channel (at the expense of Oiii); but recombining is going to result in almost the exact same HOO image that you started with. To approximate SHO, most of the Ha needs to actually move out of red and into green (you can't just name it Sii and expect it to stop behaving like Ha). I could be wrong; but I suspect that the original "master" was altered beforehand to make this process work.
Well i hope i have those telescopes..😭😭😭♥️
Mmmmm. lets see, filter drawer or wheel, couple of filters. Pondering