Pier extension plate in place.
The pier extension base plate is mounted to the top of the cement pier. The top and bottom edges are aligned to true north. A cast iron Takahashi pier fits into the cylinder and is bolted to the base plate. The wood over the top of the pier is the false floor of the observatory. All the cables will run down the pier through the cutout and will run between the false floor seen here and the true floor of the observatory about 18" below this upper floor.
