- Joined
- Aug 29, 2003
- Messages
- 15,808
Those clouds are cool. I wonder if they were taken under UV light to have them appear.
No way to guess ...
Of course, a cloud that shows - only via flurescence - got me smiling out loud !
Perhaps becouse identifying the composition if these coulds takes serious gear, I do not recall gemology papers associating composition & fluorescence in these, not many mentions overall. Perhaps there is much academic literature - I have never looked into.

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[To digress - I thought that a particularly beautiful shot of a cloud was UW, but no... just randomly blueish. Still, could not not post !

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