As much as I like using the Canon 5D MkII for imaging, I went for an Orion StarShoot Pro Deep Space. Only 6MP (as opposed to the 5D's 21 MP), but properly cooled, a LOT lighter, and no fart-angling about with cooler boxes etc. Cost was $1499 (Atik's 4 MP version costs the same) from Bintel.
We shall see how it goes tonight, so long as the wind dies down here in SE QLD - at least the sky is clear now, and DEEP blue, not that awful white haze from the burn off of the last week.
Not expecting QHY billion pixel depth, but hopefully still good results and less concern with heat noise, battery depletion, cooler boxes etc.
Maybe I should have bought another refractor instead
Anyway, be warned if you buy one and use Win 7 - the Orion disc does NOT have the Win 7 drivers auto-arranged - you have to know which to extract MANUALLY from their disc, as Win 7 will NOT recognise the auto-drivers, and nor will it let you manually install - you have to trick it by opening the "unknown device" checking the driver, changing properties (which allows you to update the driver, previously greyed out), and manually configuring where the drivers are - make it easier and download the 64 bit files from Orion into ONE folder and point to it. Orion REALLY needs to update this seeing Win 7 is the standard these days.