Comet C/2007 W1 Boattini as seen from the southern hemisphere facing west at astronomical twilight, and hour and a half after sunset (click image to enlarge).
Comet Boattini passes some nice open clusters as it hurries through Canis Major
, and will look rather beautiful over the next few days.
Tonight (June 3) Boattini is close to magnitude 6 M93, on June 8 it is close to open cluster Cr 121, and on June 9 it is close to magnitude 4.5 M41. This will be marvellous to follow in binoculars.
A spotters map is here http://home.mira.net/~reynella/skywatch/gifs/jun_boa.gif
a printable PDF map suitable for use with binoculars from 1 June to 9 June is here