In 2001, the Museum of Modern Art asked him to document their major construction/renovation project. These are some of his images from the project. Some of these exposures took 3 years!
The streaks in the sky are the pattern of the sun as it rises and sets as the earth rotates. Incredible!
Through the use of filters and a very small aperture, yet one that is standard in a professional camera lens, Wesely is able to diminish the amount of light hitting the negative to the point where he can extend the exposure many thousands of times longer than we would ordinarily expect.
His work has been compiled in a book that accompanied his exhibition, Open Shutter