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Very creative! It is indeed different and yet cool. It's amazing in that it helps to show that all of the stars are not a zillion miles away, that some must be much closer. When shooting normally, at least for me, the feeling is that all of the stars are just so far away, but with the zooming and having some stars with longer trails it shows that some are indeed closer and end up with the longer tails.
What made you think about doing this at night with stars?