Quote:
Originally Posted by Octane
Alistair,
Why 1/3rd and not 1/4? I thought it was a quarter because you're using four times as many pixels?
H
|
Hi H
I believe thats the theoretical gain but there are some losses and the sweet spot is in between 1/4 and 1/3.
To do with the fact that the pixel area for 4 pixels includes a small path for circuitry and therefore is not exactly 4 times.
This is lower for ccd as opposed to cmos where it is smaller but the microlens compensates to a certain extent.
Thats what I've read.
Better to get a bit more data than less.
The overall increase in imaging time would not be much between the two.
Peter, if you keep your binned length the same as unbinned, youre imaging longer for rgb that doesn't contribute too much to details. From what I understand, it would benefit to use that extra time for L and reduce noise.
cheers
Alistair