@dieter Oh yes, it's so unpredictable!!! You would expect a dull straight line. Instead some blurry, disappearing planet moves along :-) I think the camera kept focusing, missed focus somewhere in the middle but found it again at the end... No control, funny result.
@pwallis Me neither :-) It's because you cannot control the exposure on an iPhone. You can however take multiple shot, like making a movie. Doing so you can place the 'film' images on top of each other, making it lighter where more light is detected. Difference with the real thing is that it won't over-expose the parts with the same light intensity unless new light is detected, like my trail.
