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meteoptic-l [ät] ursa.fi
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Hi gang,
Being a resident of the 54N parallel, I am in a favored viewing position
for noctilucent clouds (NLC). I presume with a Finnish background to this
list, that this subject is within bounds?
In a recent Sky & Telescope, there was an incredible shot of NLC. I have
never seen such colors. Those colors seem to be more associated with
rocket contrails than NLC. In fact, until now, I had never seen an image
of NLC having sucg color. Being comprised of tiny ice crystals and
behaving like cirrus, I still find the color rather odd. Meanwhile,
rocket exhaust could survive at high altitudes as supercolled droplets
for some time, and pictures of those *typically* show strong iridescence
associated with droplets.
Any ideas about this?
Alister.
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