If only I could have a 500mm lens...

Cirrus + Moisture + Sunset + Luck = These results...

I'm not sure but I thing it's an Airbus 340 (Air Canada) from Toronto to London Heathrow...

(Tracking by flightaware.com http://flightaware.com/live/flight/ACA856/history/20070908/2240Z/CYYZ/EGLL )

8 Sept 2007