A spring clean of the SAC & surrounds last night, a few more photos this morning & then M5 had to go back where it belongs...
A fluorescent light directed up through the central hole reveals the worst of the pinholes (original coating defects) & makes the Zerodur (the low thermal expansion glass-ceramic that all the SAC mirrors are made of) glow spectacularly! The image on the right was illuminated with the camera flash.
Then the covers were put on & the removal (replacing?) jig slid into place underneath the mirror.
The lifting frame was attached & the tie-rods secured.
Stand-in photographer Nic took over the D200 while the whole lot was lifted & carried across to the scaffolding.
Then handed to the guys up there who shuffled it back over to the SAC.
Safely hurdling over the Faro!
& then lowered back into place.
The lifting gear could then be removed & the tie-rods re-attached to the cage.
Lastly, the pizza pan was reinstalled & the mirror cover retracted to reveal the zippy new-look M5 - WOW!!
So, did you do anything exciting this weekend? :)