There is actually another option, namely to stack every 10 seconds and use no PEC or autoguiding at all.? That way the errors will never exceed the errors in a 10 second interval.? The technology is available, I know someone who does this with his ATIK.? Perhaps the live stacking of Sharpcap can do this for general cameras.? If not now, some time in the near future.? The computing power should be there already, it is just a matter of time until people start wanting this feature.
