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M3 Blown out core
Posted: Sat Apr 03, 2021 11:44 am
by fmeireso
How can i avoid blowing out the core of M3.
Seems that the stack is good and no saturation, still i don't manage to get M3 center good
Re: M3 Blown out core
Posted: Sat Apr 03, 2021 12:57 pm
by Stefan B
Did you try the 'reveal all' or the 'reveal DSO core' presets in the HDR module?
Re: M3 Blown out core
Posted: Sat Apr 03, 2021 4:33 pm
by fmeireso
Hmm...i did the opposite.
I use tame core....
Re: M3 Blown out core
Posted: Sat Apr 03, 2021 4:53 pm
by Stefan B
The documentation says
Reveal - reveals latent structural detail in the highlights
So maybe it's worth a try, since you want detail in the highlights.
Re: M3 Blown out core
Posted: Sat Apr 03, 2021 8:16 pm
by fmeireso
Did 'nt work out .....
Re: M3 Blown out core
Posted: Sun Apr 04, 2021 6:26 am
by admin
Hmmm.... Would you be able to share the dataset?
Re: M3 Blown out core
Posted: Sun Apr 04, 2021 8:25 am
by fmeireso
Sure Ivo, here it is
https://www.dropbox.com/s/95eja5erzimsz ... e.fts?dl=0
I think i don't do the stretch right...
it is 1 hr and 40 min integration, Canon 800D at 400 iso , 1 minute subs
F:714 mm D:102 mm
Guided, dithered. Stacked in DSS
You will see a satelitte trail, but i can deal with that
Thanks for helping
Freddy
Re: M3 Blown out core
Posted: Mon Apr 05, 2021 5:30 am
by admin
Thank you for sharing that dataset.
I just did an AutoDev (with an RoI over the cluster), like so;
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- StarTools_550.jpg (195.74 KiB) Viewed 3188 times
The Reveal Core preset in the HDR module was made for this sort of thing;
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- StarTools_551.jpg (195.22 KiB) Viewed 3188 times
You can easily reduce the Detail Size Rangein an image like this, to better resolve the individual stars.
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- StarTools_552.jpg (195.9 KiB) Viewed 3188 times
Finishing off with some deconvolution (you can push it to taste);
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- StarTools_553.jpg (217.48 KiB) Viewed 3188 times
Is this roughly what you were after?
Re: M3 Blown out core
Posted: Mon Apr 05, 2021 7:34 am
by fmeireso
Darn,
Thanks Ivo,
I did the stretching like that, why did it not come out like that.
But i did tame core, so that was totally wrong, allthough i did try reveal core,
It is Always processing...i am just better in taking the picture then processing it...so it seems.
Ok so some more excercise. It is the first time i tried to process a globular, from my stack
Thanks for your help
Freddy
Re: M3 Blown out core
Posted: Mon Apr 05, 2021 10:01 am
by fmeireso
Got it,
Gosh the real important thing here was the :
HDR module - reveal core but expecially the detail size range that does the thrick..
I must write this down, for future globular processing...
i guess actually one has to build up procedures also in processing , depending on the object...
Boy, this object feels like a start over....for my processing skills in ST ...