Why have a vignetti...
 
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June 24 2026 APP 2.0.0-beta46 has been released !

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Why have a vignetting tool if you take and use flat fields?

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(@cocoplum)
Main Sequence Star
Joined: 9 years ago
Posts: 17
Topic starter  

I just watched Mabula's video on correcting vignetting, but am left wondering when this would be needed since I would always have taken a series of flats and created a master flat.  Thanks.



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5358
 

Dear @cocoplum,

The tool is needed and very useful if you don't have flats for a set of light frames for whatever reason. Then the vignetting models can create good correction models based on complicated optics like objectives with 20 pieces.

And yes, if you already make flats, than this tool is of no use to you 😉

Kind regards,

Mabula



   
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