|
Observing
tips: Look
west 30 to 60 minutes after sunset when
the Sun has dipped 6o to 16o below the horizon.
If you see luminous blue-white tendrils spreading across the sky,
you've probably spotted a noctilucent
cloud. Although
noctilucent clouds appear most often at high latitudes such as Scandinavia
and Canada, they have been sighted
in recent years as far south as Colorado, Utah and Virginia. NLCs
are seasonal, appearing most often in late spring and summer. In
the northern hemisphere, the best time to look would be between
mid-May and the end of August. See also 2003,
2004, 2005
and 2006. |
|
|
|
Photographer,
Location |
Images |
Comments |
|
Morten
Ross,
Sandbukta, Svartskog, facing Oslo, Norway
Aug. 4, 2007 |
#1,
#2,
#3,
more |
The
mellow and slow moving NLCs were present in the northwest
after sunset, as opposed to northeast before sun rise most
of the other times I've seen NLCs. Will this be the last
of the season..?
Photo
details: Nikon
D70, ISO 200, F/3.5, 13sec @ around 00:40 local time
|
|
Tom
Eklund,
Valkeakoski, Finland
Jul. 30, 2007 |
#1,
more |
This
panorama was composed from 10 vertical images shot with
a Nikon
D200 and a 28mm lens. At around 3 AM the display reached
closer to the southern horizon than the zenith. |
|
P-M
Hedén,
Vallentuna, Sweden
Jul. 30, 2007 |
#1,
more |
Another
fantastic display of NLC!!! I was up all night watching
these wonderful "clouds" and they changed in structure and
brightness all night.....a moment to remember!
Photo
details: 20mm Sigma objective, Canon
Digital Rebel XT on a tripod. |
more
images (July 30): from
Morten Ross of Sandbukta, south of Oslo, Norway
|
|
|