A single image of the brightest section of the massive "grand display" of noctilucent clouds at dusk on June 16, 2021 from "One Tree Hill" (my name for it!) near home in southern Alberta. This display was bright and extensive at dusk on June 16, and re-appeared over much of the northeastern sky at dawn on June 17. Note the colours — with the NLCs having a reddish tinge at the top where sunlight is reddened as the Sun sets from that altitude and location of the clouds. The lower areas of NLCs often appear green as well. But the main colour of NLCs is electric blue, very much so this night when they were so bright. This is a single image with the 85mm Samyang lens and Canon R6.
A 45° panorama of the massive "grand display" of noctilucent clouds at dusk on June 16, 2021 from "One Tree Hill" near home in southern Alberta. This display was bright and extensive at dusk on June 16, and re-appeared over much of the northeastern sky at dawn on June 17. Note the colours — with the NLCs having a reddish tinge at the top where sunlight is reddened as the Sun sets from that altitude and location of the clouds. The lower areas of NLCs often appear green as well. But the main colour of NLCs is electric blue, very much so this night when they were so bright. The sharp dark edge in the clouds at left is real; it is not a stitching artifact. Capella is the brightest star to the right of the lone tree. This is a panorama of 6 segments with the 85mm Samyang lens and Canon R6, stitched with Adobe Camera Raw.
A 90° panorama of the massive "grand display" of noctilucent clouds at dusk on June 16, 2021 from "One Tree Hill" near home in southern Alberta. This display was bright and extensive at dusk on June 16, and re-appeared over much of the northeastern sky at dawn on June 17. This shows the arc of the NLCs, defined at the top by the edge where sunlight is no longer illuminating the clouds, an edge that drops in altitude as the Sun itself drops farther below the horizon. Capella is at centre, Leo and Regulus at far left, and Perseus at right of centre. The main colour of NLCs is electric blue, very much so this night when they were so bright. This is a panorama of 10 segments with the 50mm Sigma lens and Canon R6, stitched with Adobe Camera Raw.
