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Abstract
Among the most popular methods to measure dust density in a laboratory setup are 1D extinction, Abel inversion for circularly symmetric geometries, and computer tomography (CT) for arbitrary geometries. We present a new method based on a 1D extinction measurement in correlation with a video taken at an acute angle. It works well with limited optical access and has a good time resolution (at least several hertz). It measures the dust density within a slice of a nanodust cloud with precision comparable to other methods. Depending on the setup, this video aided extinction measurement can replace CT.
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