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ASI6200 Manual
6
4. QE Graph & Read Noise
QE and Read noise are the most important parts to measure the performance of a camera.
Higher QE and Lower read noise are needed to improve the SNR of an image.
For the 6200 Sensor, the peak value for QE is 91%.
Read noise includes pixel diode noise, circuit noise and ADC quantization error noise. The lower
the better.
As you can see, the Read Noise of the ASI6200 camera is extremely low when compared with
traditional CCD cameras. In addition, it is with Built-in HCG mode, which can effectively reduce
read noise at high gain and keep the same wide dynamic range for this camera as at low gain. When
the gain is 100, the HCG mode will be automatically turned on. Additionally, the read noise is as
low as 1.5e while the dynamic range can still be close to 14bit.
Depending on your target, you can set the gain lower for higher dynamic range (longer exposure)
or set the gain higher for lower noise (such as short exposure or lucky imaging).
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