Remove vignetting t...
 
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2022-05-29: APP 2.0.0-beta2 has been released !

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Remove vignetting tool (anyone get this to work?)


 Ron
(@rojoyinc)
White Dwarf Customer
Joined: 5 years ago
Posts: 24
Topic starter  

I must be doing something wrong?  I enter my boxes and calc and it never removes vignetting.  But it does always ADD A BRIGHT WHITE VIGNETTING? 

I'd love to remove my mild vignetted corners.    (LP removal tool works fine)


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

Hi Ron @rojoyinc,

The Remove Vignetting tool is only to be used on data that did not have any flats applied. If you used flats, this tool is not the one you want to use. Indeed, simply use the LP removal tool in that case 😉

The remove vignetting tool uses real vignetting models so the data must have an original vignetting profile not yet partially corrected by flats.

And if you do use it in case of no flats for your lights, it's very important to place the area select boxes nicely divided over all the data on areas where there is no nebulosity, so the areas must only have stars and sky background.

Let me know if this helps 😉

Mabula


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(@artem)
White Dwarf Customer
Joined: 5 years ago
Posts: 17
 

Hello @rojoyinc,, it works for me " mostly " I never take any FLATS.. 


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(@vincent-mod)
Quasar Admin
Joined: 5 years ago
Posts: 4830
 

Flats are always a good thing to have (when taken properly, which can be a challenge). It will help to produce a better background overall then just working with the pollution tool alone.


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 Ron
(@rojoyinc)
White Dwarf Customer
Joined: 5 years ago
Posts: 24
Topic starter  

@vincent-mod

I stopped doing flats after the first year of astro imaging. Especially with OSC.   ONLY LIGHTS - there is a bit of vignetting all around and more in the corners.  I drop the boxes on the dark vignetted areas and on the background away from it (for comparison). I've tried many time using various boxes and I always am given a WHITE inverse vignetted effect (horrible) I undo and crop it out.  It would be nice if it worked? 
I've had so much more fun and have been far more productive since not using darks or flats.  Just wished it would flatten the vignetting. 
Recent shot with only lights... 
BUT I did have to crop vignetted area.  = ( 

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