This aerial view shows the array from the west (north is on the left). Each one of the three arms is 250 m long, for a maximum baseline of 437 m. In the array center area the four huts housing the astrometric siderostat can be seen. The laboratory containing the fast delay lines (FDL) and the beam combiner is to the lower left of the array center. The long delay lines (LDL) can be seen extending north (left) from the east end of the lab. The white dome at the bottom of the view is the 72 inch Perkins telescope of the Lowell Observatory.