Saturday, June 24, 2017
NLCS FROM ALBERTA Taken by Alan Dyer on June 24, 2017 @ near Gleichen, Alberta
My first sighting of noctilucent clouds this season, on the night of June 23/24, 2017 at 12:45 am in a display that lasted about an hour before the lighting angles from the Sun dropped and failed to light the clouds. This was from southern Alberta at a latitude of 51° N, with a 135mm telephoto lens 4 seconds at f/2 and ISO 800. Capella is the bright star at right of centre. Through the display a faint green aurora danced behind the clouds.