Camera has come in the plastic case:
Here are the two frames at -10*C sensor temperature: 60s dark and bias. PixInsight autostretch:
I have measured camera linearity and it looks very good (gain=0, offset=40):
Basically up to 60000 ADU plot is perfectly linear:
Then using method described for example here http://www.phy.cuhk.edu.hk/djwang/teachlab/projects/CCD/CCD%20Camera%20Gain%20Measurement.pdf I have measured real camera gain and the value is g=0.26e/ADU.
Having this it was pretty straightforward to calculate full well depth that is 17100 electrons assuming the response is linear till the max ADU. But the plot drops at the end, so for further calculations I assumed the pixel depth is 18000 electrons, and it gave following calculated results:
First column is gain set in the camera driver settings. Second column is measured signal for 1s exposure. Then third columns is real gain in dB, and in the next column real gain in electrons / ADU. Then we have camera read noise, saturation and dynamic range both in EV and dB. Last row is Atik383 values for comparison.
Read noise is pretty impressive in my opinion.
First lights have been made during star party in Zatom, Poland. I used SCT8" with Alan Gee Mark II telecompressor and CG5GT mount without guiding. I have shot 5 seconds exposures, and camera settings were: gain=20, offset=100, sensor temperature -25*C.
|NGC891, 80x5 seconds stack|
|M1, 200x5 seconds stack|
|M15, 100x5 seconds stack|
|M76, 100x5 seconds stack|