MortenBalling
Well-known member
Hi all,
I'm currently working on a project, with data gathered by different people/telescopes/cameras.
I have three different luminance stacks. First i did a Linear fit. Next I measured Median and StdDev on a small preview of the background. Two of the stacks have a SNR=400, and the third has a SNR=1300.
I then tried to combine the stacks using PixelMath using the formula:
(StackA*4+StackB*4+StackC*13)/21
However, when I measure SNR of the resulting image, I get a value of 1100, which is lower than Stack3.
What am I doing wrong? Is my method wrong?
Thanks in advance
Regards
Morten
I'm currently working on a project, with data gathered by different people/telescopes/cameras.
I have three different luminance stacks. First i did a Linear fit. Next I measured Median and StdDev on a small preview of the background. Two of the stacks have a SNR=400, and the third has a SNR=1300.
I then tried to combine the stacks using PixelMath using the formula:
(StackA*4+StackB*4+StackC*13)/21
However, when I measure SNR of the resulting image, I get a value of 1100, which is lower than Stack3.
What am I doing wrong? Is my method wrong?
Thanks in advance
Regards
Morten