LRGB stack noisy, u...
 
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2023-04-17: APP 2.0.0-beta17 has been released !

RAW support for camera color matrix with Bayer Drizzle integration, fixed couple of image viewer issues.

 

We are very close now to  releasing APP 2.0.0 stable with a complete printable manual...

 

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LRGB stack noisy, undersaturated

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(@goldspider)
White Dwarf
Joined: 4 years ago
Posts: 19
Topic starter  

Most recent project involved about 2.5 hours of L on M51 and a little over an hour each of RGB.  The resulting combined stack turned out very noisy and under-saturated.  Increasing saturation in APP only highlighted the noise.

As far as I know I've used all of the default settings from calibration through integration.  Attached file is linear, cropped and light pollution removal applied.

Suggestions appreciated as always!

 

M51 LRGB 1 crop crop NoSt

 


   
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(@vincent-mod)
Universe Admin
Joined: 6 years ago
Posts: 5456
 

Can you show a screenshot? I can only see an unstretched tiff I think


   
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(@goldspider)
White Dwarf
Joined: 4 years ago
Posts: 19
Topic starter  

@vincent-mod Apologies for not seeing this response.  I've attached a screenshot showing the cropped LRGB combine.  Yes I can increase saturation from the tool to the right but that just comes out extremely grainy.

 

Screenshot 2023 04 01 at 10.27.58 AM

   
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(@vincent-mod)
Universe Admin
Joined: 6 years ago
Posts: 5456
 

To be honest, that looks totally normal. 🙂 If you stretch more to reveal all the signal around the galaxy, there will always be noise going up as well. It will get better with more data for sure, but not completely gone.


   
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