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I really love how it turned out but... how I rid of the green vignetting?

astrophotography beginner dslr dso imaging
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#1 Xander50

Xander50

    Sputnik

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Posted 22 October 2020 - 01:36 AM

Hey guys!

 

last night, I shot the Sadir region and I really like how it turned out in just 15 min of exposure time! (I had no chance of taking more subs due to clouds rolling in.)

So i was editing in Gimp and then I noticed this green vignetting that just won't go away!

I have this a lot in pictures shot with my Svbony UHC. (I used that one here too.)

 

Does anyone know how to remove it?

 

Kind regards!

 

https://drive.google...iew?usp=sharing



#2 Boeglewatcher

Boeglewatcher

    Vostok 1

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Posted 22 October 2020 - 01:51 AM

I use Nebulosity (not Gimp) and synthetic flattening helps me a lot. I assume there is a similar functionality in Gimp.



#3 the Elf

the Elf

    Mercury-Atlas

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Posted 22 October 2020 - 05:18 AM

Did you take proper flats? I recommend to use a real flat filed like Spike-a-flat or Aurora and no trace pads, laptop screens, t-shirts etc. That should remove any vignetting during pre processing.


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