Auroras Challenge #2 in the Mother Nature series. Hosted by mirceadumitriu, happy_hope. Challenge has finished Pictures of Auroras (Borealis or Australis), as described here: http://en.wikipedia.org/wiki/Aurora_(astronomy) Show full rules Announced: Thursday, 24th March, 2011 (GMT) Submissions: Thursday, 31st March, 2011 – Wednesday, 6th April, 2011 (GMT) Voting: Thursday, 7th April, 2011 – Wednesday, 13th April, 2011 (GMT) Processing rules: Basic post-processing only. No frames, borders or watermarks. Pictures aspect ratio shall be preferably 3:2, 4:3, 16:9 or 1:1. Capture date rules: No restrictions. Additional rules: – Maximum number of entries per user: 2 Maximum number of entries in challenge: Not restricted

submission phase has ended 22 entries voting phase has ended 553 votes