Staring infrared imagers have multiple surfaces within the integrated Dewar assembly which contribute to non-traditional
Narcissus artifacts. Static non-uniformity correction is insufficient to remove dynamic Narcissus artifacts
caused by moving focus or zoom groups. Dynamic Narcissus artifacts often manifest as rings apparent to the human eye,
although they may lie near the noise floor of the imager. Moreover, strong field curvature of the Narcissus can
complicate diagnosis using paraxial methods. We compare a simple pupil ghost metric to traditional Narcissus metrics
and present an experimental case study illustrating how the metric can be used during optimization to eliminate the
effect.
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