Processing Galactic Dust in PixInsight with more Ease (high level workflow)
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- Опубліковано 18 лис 2024
- In this video I highlight parts of the workflow are that important for creating this kind of image. This is more of an "object oriented" topic video that shows some details based on specific images. Please comment if you would like to see more of these kinds of videos specifically from me (and why!). The two many hints from from this video concern using gradient correction more than once as well as a method to take care of field rotation when working on targets near the celestial pole.
This kind of information is covered in the Fundamentals collection of videos on my site at AdamBlockStudios.com (Workflow examples).
See the Reviews:
www.adamblocks...
#PixInsight #Fundamentals #adamblockstudios #Dust
Adam, just signed up for your fundamentals course and I'm blown away by the volume of pertinent content there. Overnight it has improved my images. After a year of pushing through PI on my own, I'm wishing I signed up sooner now. Thank you.
Thank you!
I find the idea of the video addressing the objective without going into fine details of the process very interesting. Now I look forward to one of how you deal with noise. Regards.
Thanks Adam. Yes, more "vignettes" would be very useful please.
This is very useful, I do a lot of widefield imaging and like to extract as much dust as I can. I've never thought of using this technique, but will deffo be following it on my next image. Thank you for taking the time and sharing your knowledge Adam, much appreciated.
Very informative Adam. The background DBE selection explanation of the display threshold rather than try to find dust free area was excellent.
Really useful trick on blurry diffraction spikes, thanks for sharing. And please give us more vignettes :)
I would like to! I just need more subscribers... I am still hanging out in the lower tier of content creators... (and I do not monetize these videos directly).
It was very helpful and informative. I have thrown away so much data because I thought it was horrible, but now seeing this video of yours I won't be so dismissive of my data. Thanks Adam.
Adam as someone who has a particular interest in dark nebulae and dusty regions I would love to see some more in depth videos on, in particular your use of DBE and stretching the fainter regions with fainter objects such as IFN, dark nebulae and the like. Perhaps a dust academy! Thanks for this video, I really enjoyed it.
I do show more examples in the Fundamentals Workflow sections... you saw them?
@@AdamBlock I have seen the extensive DBE examples but have not revisited for a while. I don't think I've come across any dusty region examples though......I must check!
Definitely very useful and you should do more!!
Beautiful result and very instructive, thanks for putting this together!
New Adam Block video! Yay!
Be certain to watch the other one on Comet C/2023 A3 as well.
@@AdamBlockwill do!
I was experimenting with this this work flow on the NGC 7000. After the first star removal I used GraXpert on the starless image and it really seemed to pull very different structures. I am new to these and can’t explain it, but it sure looked cool. - thanks for the video. I am working my way through the fastrack course.
Beautiful image - I need to give this object a try.
I'm always amazed at how imperfect your data is but how wonderful your final result is. I would have absolutely thrown out a bunch of that data if it were mine. I need to rethink my rejection threshold and work much harder on processing the data I do get. Thanks Adam for opening my eyes!
Very helpful thank you Adam
Awesome video and amazing image!! :)
Thanks. I have never tried separating stars before DBE and then adding them back for SPCC later.
This is the kind of innovation and expertise you will find on my site. If you are not already... become a member and support (and yourself.. :) )
Super interesting to watch this. More of these, please!
And I was sure you were playing with nice dataset all the time... I stand corrected.
Now, you need to show us how to properly pick up frame, cuz with what I just saw, I should not be trashing my date like I do.
Great picture btw!
Nice processing Adam. The gradient in Dark nebula and IFN always confused me to process it!
Good stuff Adam!
Thank you Adam. Could you please describe the parameters you defined to clean up the stars during stacking?
Thx!!!
Hi Adam - site member here, including Narrowband Fast Track. I was hoping for more info on bring out the dust. How about doing a full processing video on this subject? I'm battling with the Iris Nebula in LRGB and could use some expert technique tips to both accentuate and/or tame the dust. Would love to see how you got from start to finish.
This was an excellent video BTW, learned a lot, even though I don't have to deal with diffraction spikes.
I think I'm with 2-Grooves-Low here, I cull all images with doubled stars and extreme eccentricity too, not just because of ugly stars but doesn't that carry over into the object (nebula/galaxy) as well, inducing dis-clarity into the final stacked image?
A couple of his workflow videos have helped me with the Iris dust. I haven't completed the image yet, kinda stuck tweaking the "core" but they definitely helped. The LDN 183, M83 LRGB and LDN 238 if you have Horizons all have info that has been very useful towards that. Taking the images from a Bortle 1 also surely helped and made it easier I'm sure lol but definitely worth going through those again if you haven't already.
@@seriousbassface thanks for the informative reply to my apparently ignorant post. I had overlooked the LDN 183 videos but was attempting the M83 Super Luminance technique until it broke down, I think, because I am using drizzled images, as for LDN 238 Horizons is too costly for my retired bank account. Working through the excellent LDN 183 section now and getting good results on my Iris Nebula.
I stand by my implied critique of the video name as it's mostly gradient removal and diffraction spike repair (all great information) and call for 'more info on bring out the dust'.
@@AnomalousAstro Yeah thats fair, not gonna lie I was hoping for some more dust info as well but at least the LDN 183 can get us in the right direction. I feel ya on the Horizons, I'm hurting still from buying that lol but needed the Narrowband FT right away and had already bought the mosaic one.
Interesting the super lum broke down for you, I also drizzled and haven't had any issues with that. Might be worth reaching out to Adam about whatever happened. Anyways glad thats been helping you, send a link to it when you're done and I'll do the same!
cool bu how to this with a bright object like m81
Different objects are processed in different ways. M81 would require HDRMT... and this would not affect the dust (IFN). So it is easy to process for the IFN AND M81 (and M82). Become a member of AdamBlockStudios.com I have lots of answers to questions like this and more!
I try to put back stars to the starless image by command in PixelMath : ~((~stars)*(~starless))
but it doesn't work correct and adds only a few stars. Can anyone help me ?
You have not stretched your stars image most likely. Remember... needs to be non-linear. AmIright?
I can't get this to work using OSC data.
Become a member of my site and learn how!
This data must be from a very low Bortle number dark sky site. I can barely get the dark regions of the Iris from suburbia, and would never pull out dust like this from just a select part of the sky.
It is from a 3-4 bortle sky
Thanks Adam. More good info to help us with our processing.
Do not forget that this data is 50 hours integration with F2.8 on fullframe mono. Equivalent 100 hours F4 // 200 hours F5.6 // 400 hours F8 // 1600 hours with F8 and a camera like 294MM haha. I am looking forward to have a triple setup with F2.8 scopes (Fullframe D6a) so this cuts down to like 17 hours.
The most important part of this is the placement of the DBE points. Unfortunately, it is not at all covered in detail in this video.
Do you think perhaps I should? Just you know, explain everything/ Demonstrate it all? It is quite a bit of work... even to make a video like this. I disagree with you though. I do show where I put my points and I explicitly say you want to place them in a consistent background defined way. These are not the darkest spots... rather the areas of the image that are "the same" that should have a uniform brightness without a gradient.
What exact part of the sky is this? If not a named DSO, what’s the name of the brightest star? Would love to try imaging this region myself!
It is right next to Polaris which is just outside of the field of view. This is the northern spur of IFN.