Proper white balance in live stacking with the Uranus C camera.

[pastorgalactico]

Hello,
I use live stacking with regular SharpCap, and the images always come out yellowish when using automatic white balance.

That's why I need to know the correct white balance to adjust the color. Is there anyone who uses the same Uranus C camera with live stacking?

I've tried adjusting the white balance during the day for terrestrial photography, but then with deep sky it's a different story. To eliminate the yellowish tint, I try increasing the blue, but it usually just makes the entire background blue.
So, I'm hoping someone who uses the Uranus C with live stacking in SharpCap can help me with this.

Regards.

[admin]

Hi,

the problem here is the combination of the colour sensitivity of the camera (which tends to give things a green/yellow tint because the green is most sensitive) and the fact that any light pollution you have also has some sort of colour to it. This means that it can be near to impossible to get both the background and the target in a deep sky image to have correct colours with just one set of adjustments (like the colour balance controls for a camera in the panel on the right). If you adjust the balance so that the background is neutral, the foreground will be wrong, and if you get the foreground right then the background will have a colour tint...

The solution to this is to get rid of the colour cast in the background (in fact to get rid of as much of the light pollution background as you can). Once the background is largely removed, adjusting the colour balance will only really affect the foreground, so you can then get the target looking right without messing up the background colour. This is why there is now a 'background' tab in live stacking which lets you remove the background colour cast and background brightness of a stacked image. Combining this with the colour adjustments in live stacking gives you the ability to get properly colour balanced deep sky images, although you do have six things to adjust, not just three.

Of course, the easiest approach is to use the colour calibration tool in live stacking - that will automatically set all six adjustments for you (it examines the star colours for you and matches them to the known star colours to find the adjustments that give the results nearest to reality). That's a one click solution to this problem.

cheers,

Robin

[pastorgalactico]

Hello
Do you mean this?

capturada.jpg (53.38 KiB) Viewed 652 times

Okay, I see you're referring to this other thing.

capturada.jpg (53.38 KiB) Viewed 652 times

OK, I'll look into how that can be used.

Regards