The number of dark signal electrons that are expected to be captured in each exposure.

$$ I_{\text{dark}} = i_{\text{dark}}\Delta t $$

Where:

• $I_{\text{dark}}$ [e- px-1]: Mean dark signal. Also known as the dark signal variance.
• $i_{\text{dark}}$ [e- px-1 s-1]: Dark current.
• $\Delta t$ [s]: Integration time.

C13) Dark Noise - Scientific Imaging, Inc.