Quote:
Originally Posted by Placidus
Ray, one thing I'm not understanding is the definition of the gain of 200. So you know what are the units of the gain? The "gain" of a chip is often reported (irritatingly) in photo-electrons per ADU. For example, on the 16803 chip in our CG16M the "gain" is something like 1.8 photo-electrons per A/D count. A higher "gain" means you need more photo-electrons to register a count, so you get a darker image. I'm guessing from context you're describing something quite different.
We're so impressed by what you and others are doing with the ZWO camera we had a look at their web site. To our delight they actually offer a developer's SDK, so we might be able to integrate a future version into our system.
|
The "gain" is, when in a DSLR like this chip is from, the ISO. From memory it is the same chip as found in
this camera. As the gain is increased the read noise drops as does the dynamic range. At a gain of 139 it has an actual gain of 1, meaning 1e-/ADU.