In December 2011 the southern hemisphere was treated to a Great Comet. Comet Lovejoy had been spotted a few months earlier and the predictions were it would put on a good show for the southern hemisphere people and as it went north, it wourld fade. The only thing was that I don't think anyone expected such a show. The comet was visible to the naked eye extending at least 60 degrees in length. It was really quite an amazing sight. Both images were unguided. 9 Secs at f1.4 ISO 1600. Canon 5Dmk2 with a Canon EF 50mm 1.4 USM. These were taken on the 23rd of December.
1) Comet Lovejoy with the rising moon near sunrise.
2) Comet Lovejoy with IIRC the International Space Station passing to the right of it in the middle.