Aurora spiral

Posted by baconfreak
on Sunday, March 16, 2014


When sunspot AR1967 erupted on February 25th, it produced the strongest solar flare of the year so far and one of the strongest of the current solar cycle. Days later, the shockwaves caused geomagnetic storms near Earth and induced bright displays of the aurora borealis.


This large-scale spiral aurora consists of both homogeneous and rayed arcs. The green aurora originate from complex interactions between the solar wind and the constituents of Earth’s atmosphere nearly 70 miles up, while similar processes cause the red aurora between 125 and 250 miles in altitude.


Mars rises over the trees to the lower right.



Sigma 15mm f/2.8 lens @ f/2.8
Hutech Modified Canon XSi
1x20s @ ISO 1600
Stationary Benro A-258EX tripod with Manfrotto 496 ball head mount
Taken from Yellowknife, NT
01MAR2014

Tags: Aurora
Comments
To leave a comment you must be a member of our community.
Login to your account now, or register for an account to start participating.
No one has commented yet.

Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.

ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT
Find us on Facebook

Loading...