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Old February 5th 12, 03:17 AM posted to alt.photography,rec.photo.digital
Savageduck[_3_]
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Default Yosemite in timelapse HD

On 2012-02-04 17:04:18 -0800, Mark F said:

On 04 Feb 2012 20:13:54 GMT, (Ray Fischer) wrote:

Mark F wrote:
On Wed, 25 Jan 2012 19:02:10 -0800, Savageduck
wrote:

This should provide some incentive for those who have yet to experience
Yosemite, to make that trip.
http://vimeo.com/35396305
I don't understand how the meteor trails work: it seems like
meteor trails last too long.


They're not meteor trails. Yosemite is under a major air corridor
from the Bay Area to the East. Those are jet airliners. You can also
see the contrails in several of the daytime shots (@2:19, e.g.)

The daytime shot around 2:19 are contrails - they disperse over time;
the nighttime shots don't disperse and start within the field of view.


Look again.

They are aircraft light trails, the air traffic over yosemite is quite
dense, and moves on several different compass points. Over Yosemite
there are reciprocal routes running SSW-NNE, SW-NE, NW-SE, E-W, with
several hundred flights running around the clock. Then there are
military flights running from Beale AFB, NAS Lemore in California,
Nellis AFB, NAS Fallon in Nevada, and the USMC Mountain Warfare
Training Center which lies about 37 miles due North of Yosemite Valley
and flies VSTOL and helicopter operations in the area. All of these
military bases fly missions taking them across, and around the Sierras
in the area of Yosemite.


--
Regards,

Savageduck