Bracewell Observatory

The Stanford Radio Astronomy Observatory (historically known as "Heliopolis"), located at Stanford Field Site 515, is where 11 years of daily microwave sun maps were produced and where a radio telescope, in the form of a compound interferometer, first achieved the angular resolution of the human eye (one arcminute). It was also here that the first discovery was made revealing the direction of motion of our solar system relative to the cosmic background.