Motion artefacts

These images, taken with a Horizon Panoramic Camera on a flight from Lugano to Zurich in 2007, show interesting motion artefacts. The Horizon has a 28mm f/2.8 lens (and quite a good one I have to say!) which rotates during exposure, thus covering horizontally 120° field of view. Due to this rotation, different areas of the film are exposed at different times - this is why the propeller's blades are curved and why the shadow of the blades doesn't correspond to the position - the picture is exposed from left to right. The exposure time was probably 1/250s or 1/500s however it takes much longer than that for the lens to rotate accross the film's 'plane' (which in fact is a cylindrical surface).