Thales’ Engraving refers to a photograph or video of the starry sky that uses a special long-exposure method. Star trails appear in the dark night sky, sometimes with clouds or thunder, as well as airplanes or satellites. The camera is digitally controlled by a unique device and program, and it takes several tens of minutes to several hours to shoot. With this kind of apparatus, you can get a variety of images that differ each time depending on location, time, weather, and so on.