2001-11-18 ca. 3AM-4AM PST, EF 17-35 f/2.8 @ 17mm f/2.8, ISO400, exposure time = ?
This might be a 15-minute exposure.
The weird pattern is produced by a combination of the earth's rotation and the
lens' rectilinear distortion.
Everything that doesn't match the general pattern is a meteor.
There are at least 5 in this picture.