(C.Gray, R.Short)

Spent about 1-day of work getting set-up, organized, game-plan in motion and finally starting the first round of cleaning for the in-vac SPI optics (Suspension Point Interferometer).  Ryan and I did this cleaning on a flow bench in the Optics Table, and we have decided to clean all the optics at once step by step.  The first step we did was cleaning all the barrels of these 1" (mostly) & 2" optics.  This step took roughly about 2-hrs.  

Next steps would be drag wipe & First Contact-ing the front & back faces of the optics.  

NOTES:

1) There are some 2" PLCX (plano convex) optics which are a bit odd to clean/handle.  (1) The curved convex surface might be tough to First Contact.  (2) These optics don't fit in our PETG "clean" optic containers (just mentioned to Betsy and she said we might install them into their optical mounts or lay them in a pan wrapped in lens tissue).  (See images 9302 & 9300 below)

2) Some of the 1" optics are in PETG containers which are not great for our "thick" beamsplitters.  So one needs to be careful unwrapping these beamsplitters later on---so the lid & optic don't fall out--OPEN CAREFULLY please!