|
Speculative answer : the pixcels had not lost the charge in them and were acting something like a capacitor , it was taking a while for the holes or electrons or both produced by the photons to diffuse back to the n and p layers.
Maybe you need to give the sensor more time between light and darks frames ??
Jase ... ya beat me to it .... a little knowledge of microelectronics or solid state physics goes a long way.
Question : does this happen with DSLR chips too ? (they aren't as sensitive as cooled SBIG ST7XME chips).
Last edited by Ian Robinson; 22-05-2008 at 08:55 PM.
|