Re: SNR Measurements for CCD vs CMOS sensors

Posted by ellencglad on Aug 17, 2022; 3:53pm
URL: http://astroimagej.170.s1.nabble.com/SNR-Measurements-for-CCD-vs-CMOS-sensors-tp1973p1977.html

Thanks Karen for the reply. It makes sense that increased Gain (increased electrons per single ADU) is a loss and that should increase Noise.

Using that CCD equation to calculate N, when I hold other values constant and increase G, N actually decreases. Do you know why that is? I've read that strictly speaking Gain is [ADU/e-] but people generally state its inverse [e-/ADU] so I wonder if I'm supposed to be inputting the inverse value.

Thank you,
Ellen