The photo linked in post #9 has the following EXIF data:
Aperture: f/1.8
Exposure time: 10 sec
Focal length: 28.0 mm (lens)
ISO Speed Rating: 1600
Camera: Canon EOS 450D
I'm guessing that the camera's image stabilization system might be good enough to steady the shot for 10 seconds. And that shouldn't produce star trails with such a wide angle lens.