Greg G, Thomas V

I tricked Greg into helping me and we successfully installed and aligned the ETMX optical lever; it will need to be calibrated it next but that will not require the closure of a gate valve. At the first shot of alignment, there was some clipping on the edge of the viewport so we had to modify the transmitter mount which took a bit more time than I expected.  

Note:
We adjusted the height of the receiver pylon to line up the viewport to the optical lever enclosure, but this did not take into account what will be needed for the photon calibrator receiver so we might have to revisit this in the future.