Triangle Object - 3 flashing white lights blinking slowly synchronMy Girlfriend and driving with our car from Quelkhorn to Ottersberg and saw a white slowly flashing white ligt above some trees, near a wind power plant, it seemed to hover. We thought it came from the wind power plant, but seems a bit too high. The wind power plant was blinking red and the object blinking white in a ~1,5 second distance of each "blink". We decide to drive closer and drove into a field road. I jumped out of the car and saw the object now moving into our direction.Now we saw clearly that there were three white lights flashing exactly at the same time! Only slow 3 white flashing lights could be seen and they form a perfect equilateral triangle! The object flew above us from North to South and it was gone after the flyover within 1 minute! Only the 3 white lights could be seen, no other lights and no sound. It was hard to guess the distance to the object, but I think 150-200 meters high and ~50 meters in diameter. It was a clearly evening, the Moon with Jupiter where clearly visible, also some stars.I shot 3 fotos of the object with my handy, but the quality is really, really bad.