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> On the night 29th - 30 th July I noticed very clear noctilucent
> clouds (I hope my spelling is right). Around 11.30 pm (local time)
> in Helsinki I saw the northern half of the sky covered with NLC.
> They were very Cirrus-like but they had the 'magic NLC glow' and it
> was pretty dark, so I don't think I've mistaken.
I was in Eastern Finland and saw also that 29/30th display.
In Imatra the sky was overcasted already at 0.30, but in
already in midnight the display was very bright and complex.
The dominating feature was and area of strongly whirled
forms. On the lower altitudes the bands were very bright.
One other point of NLCs. I visit about two weeks ago in
Turku. Pekka Parvianen and one American student Maija
Niska had a project of stereographic pohtographing on NLCs.
Maija take images in the fixed place, which location have
been check by GPS. Pekka drive car perpendicalur direction
of major NLC area. The used baseline was about 10 km. Both
photographer had cellular phone by which they could check
imaging direction and timings. The target of this project
is create 3D model of display and compare it to gravity
wave models.
-VeikkoM-
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