Jason and I are ready for the lateral and longitudinal ETMy position measurements in the AM. We won't know whether we will need to tweak the ACB position for any line of sight issues until the first look. Thanks Betsy and Travis for setting the ACB for us (temporary setup). We will not release the optic suspension for the fine positioning until we are satisfied that no large moves are needed.
Credit where credit is due: Mitch and Jim "installed" the ACB. Betsy and I just uncovered the SUS and mounted the corner cube.
For posterity - the ACB is sitting on the ACB "table" in the tube section between the chamber and the spool. This is to enable the IAS sighting of the ETMy optic without the ACB blocking the view while it is parked in the tube before install. We chose not to install the ACB on Stage 0 because it blocks access to the 3rd blocked side of the QUAD making alignment and sensor tuning extremely difficult. The ACB will be installed on Stage 0 after a few rounds of this is complete.