C/2007 W1 Boattini.
 
 Comet W1 Boattini is my first "hairy star" of the year, but I think it should be re-named an emerald star according to its colour. Photo details: Canon 350D, ISO 800, 3 x 2 1/2 minute exposures with a Canon EF-135mm lens @ f-3.5.

 Image taken May 31st 2008