The observatory is an oasis of green.
The National Cathedral.
The well hidden Vice President's house.
Brian tells a story of Vice Presidents past.
The time communication center is where signals from the USNO master clock are sent to WWV and other stations.
A telephoto view of the time communication center.
The observatory grounds helipad.
The 26" inch dome.
A 19th century building that's been around the world.
Brian describes an antique clock.
Our tour enters the library.
The largest astronomical library in the western hemisphere.
The United State's first master clock.
Sally Boskin shows an original copy of Copernicus's Revolution of the Spheres.
The frontpiece of Brahe's book about his observatory.
Brahe's armillary sphere.
Brahe's mural quadrant.
A fanciful Andromeda from Tycho's book.
An early 17th century star atlas.
The detail on the atlas is amazing.
A very early map of the moon.
A second view of the early Moon map.
Brian's Office.
The U S N O speckle project resolved hitherto unresolved pairs.
Brian talks about astronomy at the USNO.