Photograph used by permission of Ralf Vendebergh
I recently ran across this amazing picture of the International Space Station taken by Ralf Vandebergh. So I went looking for his work on the web. It is fascinating stuff
Ralf uses a 10 inch Newtonian telescope with a videocam eyepiece. He manually tracks the ISS and other objects across the sky. Due to atmospheric turbulence (its why stars twinkle), a portion of one image may be clear and another blurry. By judicious combination of various images from the video and that good old standby Photoshop, you can create a nice image. Ralf has one from 21 March 2009 showing an astronaut performing a spacewalk outside the ISS.
If you want to compare ISS components with what you see in the images, consult the link.
Here are some additional links:
You can follow Ralf on Twitter