As a bit of an experiment I did this immediately after imaging 12 Victoria. Here we have the brightest star in the sky - Sirius - at magnitude -1.46 in the constellation Canis Major. 60 x 10-second subs. I might return to this one to try and get a few more background stars.
Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.