[link=http://www.facebook.com/TSOphotography]This guy[/link] takes some of the most spectacular timelapses, check out this one of the AB >
http://vimeo.com/21294655
ORIGINAL: marc s
That is one stunning picture, must book a trip with the wife to see these - just awesome!
No doubt, keep me posted when you do!
ORIGINAL: warbird addict
Dude that is an awsome photo, you should submit it somewere people pay big bux for stuff like that
It is, though I can't take credit, check the link below to the photographers flickr page.
ORIGINAL: BaldEagel
I don't know if this is normal, only what I have seen, but my own effort took over three minutes to get a decent effect, I think most they are not in real time, so don't be dissapointed if you go there and don't see what is shown in the amazing published photo's, bit like looking at a Star Nebula they are black and white.
They can be quite lively and bright when there have been large [link=http://en.wikipedia.org/wiki/Coronal_mass_ejection]coronal mass ejections[/link] going on but sometimes they can be dim.
But you have no problem seeing them either way. Found a [link=http://sverrir.net/files/doc/auroraborealis_lowres.avi]low res. video[/link] I took back in 2006 for a mate and few pics that got 5 sec. exposure, sorry about the fuzziness no tripod used). Those pics are taken outside my mates house so you can imagine the effect outside of the city light pollution zone!
ORIGINAL:
http://science.howstuffworks.com/nat...uestion471.htm
Solar winds stream away from the sun at speeds of about 1 million miles per hour. When they reach the earth, some 40 hours after leaving the sun, they follow the lines of magnetic force generated by the earth's core and flow through the magnetosphere, a teardrop-shaped area of highly charged electrical and magnetic fields.
Â*As the electrons enter the earth's upper atmosphere, they will encounter atoms of oxygen and nitrogen at altitudes from 20 to 200 miles above the earth's surface. The color of the aurora depends on which atom is struck, and the altitude of the meeting.
Green - oxygen, up to 150 miles in altitude
Red - oxygen, above 150 miles in altitude
Blue - nitrogen, up to 60 miles in altitude
Purple/violet - nitrogen, above 60 miles in altitude