Yeah mate - I will have to leave that for others as I have so experience with other CCDs.
Noise but is noise as I understand it - I have found that with advanced cooling and shorter exposures (say up to 5 - 8 minutes) I can get away without darks if I am stacking enough.
I suppose by inference - less cooling = more exposures and more darks to achieve the same result if all things are equal (QE, well depth etc - which they arent I suppose - I am unaware of the performance of the other CCDs). But i await the voice of experience.
Mark
(half time is nearly over - and blues are winning - back to the TV
)