posts about time-lapse.
this weekend, i payed yellowknife a second visit. this time, during winter, with snow, ice, and freezing temperatures. and more aurora viewings.
here’s a first impression i got on the first day. it was taken at 14:20, and you can see that the sun was already pretty near to the horizon. the sunset is around 15:30, and goes down to 15:00 during winter’s shortest days. sunrise was around 9:30 the time i was there; it goes up to 10:00 during the shortest days.
i was staying in the narwal bed and breakfast, a small bed and breakfast located near the great slave lake, meaning i could just walk on the frozen lake and hopefully see some nice auroras during nighttime. here’s a nighttime impression, without an aurora but with clouds:
during the days, i often walked around and on the frame lake. lots of memories came up. it was often cloudy with breaks. here are some nice impressions:
finally, on the second and third night, the sky was mostly clear. and both nights featured auroras! the second night had a not very bright one, at least while i was outside, but the third and last night had some really great ones. here are a few impressions:
finally, here’s a video i recorded, consisting of 484 frames, each shot having an exposure time of one second. the movie is played back with six frames per second, i.e. you get a time lapse:
(this is a html5 video tag, so hopefully it works. otherwise, you can directly try the mpeg 4 variant and the ogg theora variant.)
on our last night in yellowknife, we had the luck to see an aurora borealis. experiencing an aurora is something hard to describe. the following photos and videos just give a small glimpse of its wafting beauty.
for the more technically interested people, the camera settings i used for most photos are a shutter speed of 8 seconds, aperture of f/4.0 and iso sensitivity of 800. this was the first time where i was really happy that i have a remote for my camera’s shutter and a tripod. below you can view some videos, taken with these settings (hence, between two frames there are around 8 seconds delay). there are six frames per second, whence the videos are around 48 times faster as the real aurora was. each video comes as a flash player together with an avi download (the avi files contain essentially a sequence of jpeg files, so no fancy codec is required).
