Video aided extinction measurement: A competitive method for dust density diagnostics.

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).