A dragon on the night sky

You may wonder if I have a  contestant to the new  Vera C Rubin Observatory  that has the sharpest digital camera and the best observatory in the world. The another alternative might be  that I photographed  an oil splash on asphalt.
  You can guess the real answer when I tell you that now it is so much light here in the middle  part of Finland that you need not switch light on to read a book at night.