Today we installed the primary mirror on the first telescope, at Site #1. The operation went very well, with no problems to report. We worked on the installation of the secondary mirror this afternoon as well, but we found a couple holes in the truss ring that needed to be countersunk, so we will do that tomorrow morning and finish the installation then.

Here are photos of the primary mirror installation this morning.

This is me, adjusting the axial counterweights.

One of the axial counterweights in the mirror cell. The mirror is supported by 36 of these guys, all of which need to be adjusted to take the load correctly.

Mirror cell ready to go up to the observing floor.

Mirror cell on the lift table, going up to the telescope center section.

Bolting the mirror cell onto the center section.

Mirror cell successfully installed.

Unpacking the primary light shield.

Installing the eyepiece adapter, after installation of the light shield.

Telescope pointing north for installation of secondary and focus housing.

Photo of the mirror in the telescope.