Quote:
Originally Posted by Terry B
I agree that it is fixed noise that has not been removed by darks that then streaks when stacked. The images will have moved due to tracking errors and when aligned the fixed noise appears as streaks.
Taking many darks and averaging them before subtracting the darks will help.
There will be random noise in a single dark and this noise is subtracted from the data image as well as the actual dark image.
Try it by taking 2 separate darks and subtract one from the other. The resulting image should be a perfectly even black image with every pixel measuring 0.
|
Thanks Terry!
How is the random noise subtracted from the dark image if i dont apply the dark to the dark image? Just trying to understand what you mean.
So i did the stack again, without subtracting a dark, the resulting image is bellow. Just seeing what happens.
The way im subtracting the dark is to past the dark layer on the data layer in layers then select the "difference" mode and then flatten the image. Is this the best way in PS6??
Quote:
Originally Posted by Terry B
This will not be the case.
|
I tried, it was not the case.