Gain etc.

Forums Photometry CMOS for Photometry Gain etc.

Dr Andrew Smith

I am not sure I agree with this. Yes increasing the gain reduces the well depth but thus can be compensated for by take more shorter exposures and or defocusing.

Increasing the gain reduces both the read noise and the quantisation  noise.  

There is a balance to be had trading off these factors. I use a gain of 200 (ASI gain) for my spectroscopy.

Regards Andrew