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Bottletopburly

Banding

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Bottletopburly

I have noticed a banding on my images during last two sessions , now the only thing that changed was  my guide camera , now could it be I’m now dithering too many pixels , could it be led flat panel faulty causing issue  , stacked in Siril as normal using script no darks , I will restack lights on their own and see if I can work out if it’s flats or bias frames causing issues or if dithering causing, has anyone seen this before large.6D7F15A1-71FB-4341-B922-9FFEDAEB7202.jpeg.944fbf3d91d438be6bcbbf139b464d33.jpeg

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RonC

I had this a while ago and I sorted it by adding another paper layer to my LED panel..?

Not sure if this will help as it wasn't as bad as your example!

Cheers

Ron

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Derbyshire Dave
1 hour ago, RonC said:

I had this a while ago and I sorted it by adding another paper layer to my LED panel..?

Not sure if this will help as it wasn't as bad as your example!

Cheers

Ron

Yeah, I had exactly that too whilst taking flats, and agree with Ron, another layer of paper sorted it.

 

Process of elimination though, so let us know how you get on Dave

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Bottletopburly

Cheers @RonC @Derbyshire Dave   I think you maybe right I was thinking it may be to do with the refresh rate will have a play , camera still fixed to scope so I can redo flats and check will update.

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Bottletopburly
1 hour ago, Ibbo said:

Just a thought if you can rotate the flats panel.

Good idea 💡 Steve 👍

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Bottletopburly

Seem to be getting somewhere problem is the flats , I tried with an iPad setting histogram one third from left no banding seen even using the stretching in APT , now I put two sheets of white baking paper in front of panel no difference add white A4 paper, the same , banding can be seen but if I use pink paper instead of A4 paper   Set histogram one third to left ( I measure  exposure using av mode on Nikon but manually set in Apt as  av mode can’t be set the same as a canon in APT ,  will run a stack in Siril and see how it compares to the iPad flats ( tried turning flats panel makes no difference).

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