A superb showing of noctilucent clouds (NLCs) on June 27, 2021, with the colours very prominent, even to the eye. The colours transition from the red and oranges of the solstice twilight, through to yellows and even greens above (these were obvious to the eye), then to the cyan and electric blue of the clouds themselves. The tops of the clouds fade to a deep red as they are being illuminated there by the setting Sun at their altitude and latitude and so appear red, with that red edge decreasing in altitude as the evening progressed as the Sun set lower below the horizon. A widespread area of very clear sky locally and far to the north may have contributed to the better visibility of the colours as the light from the Sun had a clearer path through the atmosphere. This was June 27-28, 2021, in a particularly widespread display that started the evening with the clouds filling the northern half of the sky,. This was from home and is a panorama stitched from 9 segments, each with the 24-105mm f/4 RF lens at 67mm, and Canon R6 camera.
An extensive display of noctilucent clouds starting the evening nearly up to the zenith and covering all of the northern half of the sky on June 27, 2021. This frame is from later in the evening and shows the tops of the clouds starting to turn red as they enter into Earth's shadow and are illuminated only by the red light of the setting Sun as seen from that high altitude in the atmosphere. I shot this from home in southern Alberta, as part of a time-lapse sequence. The camera is aimed almost due north here. Polaris is at upper centre. This is a single shot with the TTArtisan 11mm full-frame fish-eye lens at f/2.8 and on the Canon R6.
An extensive display of noctilucent clouds nearly up to the zenith and covering all of the northern half of the sky on June 27, 2021, shot from home in southern Alberta. The camera is aimed almost due north here. This is a single shot with the TTArtisan 11mm full-frame fish-eye lens at f/5.6 and on the Canon R6.
