Alloa-based BBC Weather Watcher Mr C took this image of noctilucent clouds after midnight from Horgabost beach in the Western Isles. [Mr C/BBC Weather Watchers]
Noctilucent clouds have been spotted from Scotland over the past few weeks.
The Met Office says the clouds are extremely rare and form in summer high up in the Earth's atmosphere.
The Latin name means "night shining" and the clouds usually appear bluish or silvery in colour.
They have been seen from the Western Isles, north-east Scotland and the Scottish Borders.
A photograph of the rare clouds taken from Aberdeen. [Mercury Blue/BBC Weather Watchers]
Wick has been among places where the clouds have been spotted. [Oz/BBC Weather Watchers]
An image taken from Rogart in Sutherland. [Cogies Auroras/BBC Weather Watchers]
Andrew Lindsay's picture was taken from Hamilton, Lanarkshire. [Andrew Lindsay]
A dramatic night sky pictured from Daliburgh, South Uist. [South Uist Vibes/BBC Weather Watchers]
Jennifer Brown's picture of the clouds at Uig, Lewis. [Jennifer Brown]
An image taken from Coldstream in the Scottish Borders. [Requiem/BBC Weather Watchers]
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