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What does frosting look like?
Recently my QSI has taken to producing the following images. The first one is a large circular spot (in this case on a flat image). It then takes anywhere up to 60-80 images to reduce the spot to nothing (see the later image). Once gone it performs flawlessly all night. Is this frosting or something else? It looks like moisture to me but when I look into the sensor window I cannot see anything. Any thoughts?
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