make_emccd_noise

hcipy.util.make_emccd_noise(photo_electron_flux, read_noise, emgain)

Draw samples from a Poisson-Gamma-Normal distribution, which is an accurate model of EMCCDs (following [Hirsch2013]).

The model is most accurate for high emgains.

[Hirsch2013]

Michael Hirsch et al. “ A stochastic model for electron multiplication charge-coupled devices - from theory to practice.” PloS one 8.1 (2013): e53671.

Parameters:

photo_electron_fluxarray_like

The incoming photo-electron flux, which is usually a combination of QE * (photon_flux + background) + dark current.

read_noisearray_like

The read noise of the camera.

emgainfloat

The electron multiplying gain of the EMCCD process. Must be larger than 0.

Returns:

array_like

The noisy realization of the EMCCD detection.