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2022-05-29: APP 2.0.0-beta2 has been released !

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Download links per platform:

windows 2.0.0-beta2

macOS x86_64 2.0.0-beta2

macOS arm64 M1 2.0.0-beta2

Linux DEB 2.0.0-beta2

Linux RPM 2.0.0-beta2

[Solved] Dithering


(@evolve)
Brown Dwarf Customer
Joined: 3 years ago
Posts: 12
Topic starter  

Good Evening

I try to solve my Walking Pattern Noise

So I do dithering and I checked the Pictures it works. (each picture 5 pixels)

Do I have to set something in APP that this Noise goes away ? A Friend said maybe activate something like outlier (he doesn't have APP) . Because after Stacking I still can see Walking Pattern Noise.

CS Sebastian


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(@mabula-admin)
Quasar Admin
Joined: 5 years ago
Posts: 3158
 
Posted by: @evolve

Good Evening

I try to solve my Walking Pattern Noise

So I do dithering and I checked the Pictures it works. (each picture 5 pixels)

Do I have to set something in APP that this Noise goes away ? A Friend said maybe activate something like outlier (he doesn't have APP) . Because after Stacking I still can see Walking Pattern Noise.

CS Sebastian

Hi Sebastian @evolve,

In which APP version is this? Have you tried in 1.077 or even 1.078 ?

If walking noise is still visibile, then it is caused usually by hot pixels or fixed patterns in your camera's dark current.

Are you using a Bad Pixel Map? If not, try calirbating with a Bad Pixel Map as well in 2) Calibrate.

In 6) Integrate, you want to use an outlier rejection filter to remove outliers, that should ged rid of remaining walking noise. If it is still present though, maybe the dithering steps were still to small?

Perhaps you can show a screenshot? How many images did you integrate?

Mabula


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(@evolve)
Brown Dwarf Customer
Joined: 3 years ago
Posts: 12
Topic starter  

Thanks for Helping me

I create a BPM and a Master dark Flat one of those reduce it much.

I tried also the outlier rejection by hand but I didn't see a different to automatic mode, so I guess the Program did it right


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(@mabula-admin)
Quasar Admin
Joined: 5 years ago
Posts: 3158
 

Excellent Sebastian  @evolve, I think it is the addition of the Bad Pixel Map.

Walking noise is caused by hot pixels in your data and the BPM is there to get those corrected at the calibration frames already 😊 

Mabula


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