Intro to Narrowband and Hubble Palette, Pt. 2b - DeepSkyStacker and GIMP
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- Опубликовано: 3 окт 2024
- Watch part 1 here first for an intro to the concept of narrowband: • Intro to Narrowband an...
This video shows a basic processing routine using DeepSkyStacker and GIMP.
Links, sample files, and more information here: nebulaphotos.c...
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Great video. I have found this video more helpful than any other that I have watched. Thank you.
Glad it was helpful Alex! Clear skies, Nico
Really helpful tutorial, followed step by step. Helps allay the panic in trying to understand and execute post- processing. Thank you Nico.
Extremely helpful video showing how to combine and process filtered subs in GIMP. Now I can do it too. Thanks!
Very very helpful, since I do use GIMP.
Thanks so much for all the detail that you've included.
Great, glad it was helpful!
I know this is a bit old, but I want to thank you for this. The part that I found most helpful was where you showed how to open an image as layers and then compose them. I use a DSLR, and I know it isn't going to be perfect, but I'm going to use my broadband light pollution filter to try to make an HOO image by splitting the channels in Siril and then recombining them in GIMP. I have some old data I can try this on so it should be an interesting experiment for a cloudy night!
Great video and a very comprehensive tutorial. 👍
Thanks for taking the time to upload this Nico. Since you asked, I find the saturation tool helps to diminish the magenta around the stars.
Thanks for the tip LostOzzie! Clear skies, Nico
Easiest way is to remove them first. With starnet.
I know I'm a little late to the party, but thank you for uploading this and having the data available to process. I've been on the fence about making the jump to mono, but this seals the deal! I did take your data through starnet and then blended the images in gimp with a star mask (learned from one of your videos) which eliminated the magenta stars and really made the nebula pop. Thanks again. Keep up the great work!
Awesome! Mono is amazing, just wish it wasn't so expensive to jump in to it (decent filters, good filter wheel, special camera, etc.) or I'd recommend it to more people. When I first started with mono, I tried to save money with a cheap manual filter wheel with a big open hole in the side that I would then cover with aluminum foil (big mistake).
@@NebulaPhotos agreed. It’s a huge, but worthwhile investment for quality mono equipment. I do have the asi120mm-s used as a guide cam. Understanding full well it’s not a dso cam, I’m going to play with that as I save my pennies for a full on mono setup.
I posted a link to this video at my favorite forum " Iceinspace " as I think it will be very helpful to new members so hopefully some come and have a look. I developed my own procedure simply because I don't know what I am doing...I end up with up to 9 different images from StarTools which I combine by layering in Photoshop so really happy to find this video...details of my messy procedure can be found there in "fighting the dragons" in the beginners section...so you have been an enormous help as I can streamlinecthings a bit.
Anyways it's fun. Keep up the great works.
Alex
Very cool Alex! I'll check out your postings. Clear skies, Nico
This is an excellent video on bringing it all together. Thanks
Fantastic Video! thanks for sharing
In GIMP under colours you will find hue-saturation, in this you can selectively modify a colour in hue brightness and saturation. It's an easy way to wipe away the green hue or other. Over use and it will add artifacts though. Great vid, thank you.
Very good, thanks
great video! thank you
Glad you liked it Adrian! Cheers, Nico
This video is absolutely wonderful. Very helpful. Thanks for sharing this! Have you tried creating a star mask to help keep the original color of the stars intact?
It's an interesting idea. Star masks are tricky as they can easily introduce artifacts if they aren't perfect. With Hubble Palette, I will often just make the stars white so as not to distract from the beauty of the nebula. :)
Great helpful video for several questions concerning processing in Gimp. Thanks for that. But a additional Question; what i have to do in Gimp, to combine Narrowband images (finished as Hubble) with regular luminance Images? Background is about 4h Narrowband exposures and 10h luminance exposures.
But at first i am very happy, to find the next mosaicpart for good image editing using Gimp with your video! Thanks a LOT!😃
I guess I would just register the luminance to the other narrowband channels (just treat it as an additional channel) then set the layer blend mode to luminosity.
Thanks for the video. So why are you using the Ha as the reference for the Sii and the Oiii? Why would you not use the best out of the Sii for the reference for the Sii and the best Oiii for the reference for the Oiii? If the Ha reference is not checked is it even using it in Deep Sky Stacker?
It makes sure the different colour frames are all aligned - when you load them into GIMP they all overlay perfectly.
I have seen (in some video I've watched) a program called Starnet++. Have you used it? Would it help in preserving the star colors?
OK sorry I just went and read up on the DSS docs and you are 100% right. Use the one ref frame to get everything to line up and don't check it on the other stacks so it does not get included. It also says that if you don't designate a reference frame it will just use the one with the high score by default. Do I have that right?
Is this a good hobby or astro photos is a real Job ?
Hobby
I notice in the sample files, you have a mixture of 0.46 and 300s exposures in the ha dark flats folder. Have the 300s been put in there by mistake?
Yes, I’m sure that was a mistake. I was wondering where those went! (I retook the darks because I couldn’t find them). Thanks for letting me know and I will correct that when I can.
@@NebulaPhotos My pleasure, pity you had to waste a couple of hours retaking them.
I've removed the 300s darks from the ha dark flats folder. Thanks again for noticing that, and alerting me! Cheers, Nico
@@NebulaPhotos I processed the files in Pixinsight. I'm in the process of learning it. I'm looking forward to seeing you video on Pixinsight to see if I am on the right track, it's a steep learning curve. Here is a link to the final image. drive.google.com/open?id=1k6Y-TVxnZSkbnHeC1B5-YgbM09pV4J8L
For you dark, and flats is that dependant on the filter?
Flats, yes. Darks only if you are using different exposure lengths for different filters.
I downloaded the data yesterday and notice in the Ha darkflats there 0.46 and 300 second exposures. Which set do I use?
Ah, sorry must have gotten some stuff mixed up. The 300s are just darks and the 0.46s are the dark flats.
@@NebulaPhotos ok thanks.