Lots of jobs are going on all over the facility, including fixing up some wiring on the cherry-picker to make power available up there, particularly while doing mirror work.
All the mirror segments that had been removed before the SAC was brought down had been re-coated & the last of them went back into position a couple of days ago.
Here it is, showing up its dirtier neighbours...
So for the first time in almost 2 years, we have a complete primary mirror array!
Very cool to see & much fun to photograph :)
The recently cleaned & re-installed segments still need to be pistoned (adjusted in Z) to get them to fly in formation with the rest - this will be done next week.
Meanwhile - up at the top end, Dummy PFIS (the weight simulator for the spectrograph) was brought down from the tracker, along with the stage assembly that carried the camera we used to check the IQ after the SAC was put back up.
Then the rotating structure (RS) part of the payload could be removed & put back in the spectrometer room. It's getting a few more mods made while it waits for SALTICAM, which is due to come up from Cape Town on Sunday.