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Effective Quantum Efficiency<br />
of Image Intensifiers<br />
Noise Factor<br />
N f : = SNR in / SNR out<br />
N f > 1 for all <strong>ICCDs</strong><br />
Loss mechanisms and<br />
electron multiplication<br />
statistics<br />
Gen II + III: 25% of<br />
photoelectrons lost in<br />
MCP (75% active area)<br />
Detector Noise Factor<br />
Gen II 1.6<br />
Gen III filmless 1.6<br />
Gen III filmed 2.0<br />
CCD 1<br />
EMCCD 1.3
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