Live stack enhancement

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Gfischer
Posts: 168
Joined: Thu Jun 22, 2023 4:20 pm

Live stack enhancement

#1

Post by Gfischer »

Hi robin,
I’ve been having a great time doing dso live stacking. I use the enhancement features quite a lot. I use the color noise to clean up the Asi183mc color noise. I’m using a 12” f/5 dob and shoot a lot of small ngc galaxies. I find a little sharpening helps define them . This causes a speckling effect which is controlled by the Gaussian filter. Unfortunately you can’t use both noise reduction at the same time. I can do it post process but maybe an option for both?
Thanks Robin
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admin
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Re: Live stack enhancement

#2

Post by admin »

Hi,

thanks for the suggestion - that area of live stacking is a place that I would like to improve (I'd like to be able to try wavelet sharpening on DSOs too - the same as used in planetary stacking). The idea of being able to mix both the colour noise reduction and a small amount of normal noise reduction isn't bad at all, although I have noticed that colour noise reduction is most important early in the stack (few frames stacked) and becomes less useful once you have a lot of frames. Do you notice the same?

cheers,

Robin
Gfischer
Posts: 168
Joined: Thu Jun 22, 2023 4:20 pm

Re: Live stack enhancement

#3

Post by Gfischer »

Robin,
Yes I’ve noticed the same. With a longer stack you turn off the color to go to Gaussian the change is not as severe as in the beginning. Wavelets for dso sounds interesting.
Just fyi after saving exactly as seen in eaa run I pull up image in processing program. First remove black borders. Second add annotation on edge of frame (object identification, sub length, total integration, filter- nexus). Use Gaussian filter if I’m looking at small objects. Now ready to go.

I am so impressed with your program
Thanks for all your hard work
Borodog
Posts: 425
Joined: Fri Jan 01, 2021 7:25 pm

Re: Live stack enhancement

#4

Post by Borodog »

+1 on using multiple kinds of noise reduction (color vs. luminance) at the same time, independently.
Icharuss
Posts: 14
Joined: Thu Jun 30, 2022 4:05 am

Re: Live stack enhancement

#5

Post by Icharuss »

I started using wavelets in Siril on the SC FITS file. That would be a great addition to the live-stacking toolbox. I've found it can make a difference on small targets like galaxies, but it's very easy to mess things up...
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