I observe the sky during the day for passenger civil aircraft and air cargo jets. in the evening i try to identify constellations, planets, satellites and shooting stars (www.Heavens-above.Com). this brings me to see ufos (www.Ufostalker.Com/). so here are my observations of the celestial vault above my house located to the north-west of the city quebec ready of the military base and the airport. friday, august 19, 2016 at 13:10 25 ° c a few clouds, i was following the boeing 767 of flight dl233 rome-detroit (www.Flightradar24.Com), suddenly i notice with my binoculars bushnell (15x50) a drag of dissipation parallel to the drag of condensation of the boeing which is surpassed very quickly by the great black triangular ufo. a cloud conceals the two aircraft and then i see the boeing but not the ufo that disappeared in the sky. wednesday, 24 may, 2017 at 22:10, 12 ° c some clouds without moon. i watch the stars. i see with my binoculars in the west a very bright white light, i sweat it and hardly distinguish the triangular shape of the ufo flying at high speed towards the south passing over the airport. the ufo disappeared in the sky. tuesday, 6 june, 2017 at 22:10 13 ° c a cloudless sky and full moon. i observe the planet jupiter south-west again i still see with my north-west binoculars a very bright white light, i soothe it and distinguish the triangular shape of the ufo flying slowly in the direction of the south passing over the airport. the ufo disappeared into the sky. thursday, 8 june, 2017 at 22h01 18 ° c a little sky cloud and full moon. i observe jupiter and saturn as well as the stars. then appears in my binoculars again the very bright white light through the cloud veil coming from the north-west at the same altitude and slowly heading south but disappears before passing over the airport. thursday, 15 june, 2017 at 11:10 24 ° c some clouds, sitting on the front balcony of my house without my binoculars. i noticed a large aircraft with a four-jet train (boeing 747 or airbus a380). suddenly appears the drag of dissipation parallel to the drag of condensation of the plane which is exceeded very quickly by the great triangular black ufo and immediately disappears in the sky. a few minutes later the same phenomenon appears again.