I updated my previous answer with some more info.
I have not seen what the actual gain setting in e-/ADU is. ZWO has not reported it. However, it is easy enough to derive, assuming all the other info is correct. The camera uses a 12-bit ADC. It has 3.5e- read noise at minimum gain, with the FWC of 20ke-. That gives us 20000e-/4096ADU conversion rate, or ~4.9e-/ADU at minimum gain (gain setting 0). At gain setting 139 the gain is 1e-/ADU. At a gain setting of ~260 you hit minimum read noise of ~1.2e-, with an FWC of 1000, for a gain of ~0.24e-/ADU.
The camera uses regulated cooling, down to -40 to -45 C dT below ambient. The ZWO rep posted a dark current chart in one of the threads in BII...I'll see if I can dig it up. From what I remember, at -10C and colder, dark current was very low. There is some low-level amp glow, however in example narrow band images, it has calibrated out very well. In only one image did I see anything that looked like a glow remnant...however the owner of the image said it might have been a reflection or gradient from the moon as well. Overall, the dark current seems to be well managed, and when cooled, it is quite low. Competitively low at the very least, if not better than the KAF-8300.
The camera is USB3. It is the same 4/3 format as the KAF-8300. I am not sure if the chamber is sealed, I do not believe it is filled with inert gas, though. It uses a female M42 thread by default with a backfocus requirement of 17.5mm, however the female T-thread adapter can be removed to expose a male M42 thread, which if used with Precise Parts custom adapters, would give you a mere 6.5mm backfocus (I am actually going to be doing this myself to adapt it to the Atik EFW2 FW and give myself enough backfocus to use a thin 10mm Telescop Service EF mount adapter to adapt the camera and FW to my 600mm Canon lens.)
I am not sure if it has Windows 10 drivers. I am still using Windows 8 on my main computer, where I'll be doing most imaging, so I did not check on that. The details should be on ZWO's site, though:
Oh, and FWIW, the camera is releasing this month. It's brand new. I'm kind of taking the plunge in preordering, so I don't yet have first hand experience with it, nor have I had the opportunity to actually do any measurements. There are a couple of individuals who have beta cameras who have shared some data in the BII forum in one of a few threads about the camera. You can look there for more info. I'm impressed with everything except the amp glow so far, however I am not terribly concerned about the amp glow. I've been dealing with that for years with my 5D III, and it should be far easier to deal with when operating at a regulated temperature.
In terms of overall build quality...it is not going to be as high end nor as refined as a KAF CCD camera from SBIG, QSI, FLI, etc. If you want that grade of quality, then you are probably better off still going with a CCD for now. The KAF-8300 cameras are basically direct competitors. That said...you will spend 3-4x as much at the very least on a CCD...as the ASI1600 is currently under $1200.
Edited by Jon Rista, 02 May 2016 - 03:08 AM.