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Add primary dichro cap, pressing it against vertically mounted breadboard.
It secures to the primary dichroic holder with M4 screws. Once the cap is in place be *very* careful if you have to remove it. It's easy to chip the dichroic even if you're being careful.
Add bigDetLensHolderAssby - note need a 1/2 inch 10-24 screw to secure top right part
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