This photograph was taken in a trailer park in Yuma, Arizona.
You can see that the stars in the sky have made trails as the earth moves relative to them.
I kept the shutter of the camera open for a relatively long period (about 10 minutes) using a Canon TC-80N3 remote control. This unit has various settings, such as self-timer, interval timer, long-exposure timer, and exposure-count. In this photograph I used long-exposure timer.
I also made a sequence of photographs that I intend to turn into a timelapse video soon.
If you have a camera such as a Canon 350D, 400D, 450D or 500D, you can get a conversion cable to use the Canon TC-80N3 here.
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You can find more star trail photographs on these sites: