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| Mirrors MMC1a and MMC1c hovering above their catchers. In the back the small pick-up mirror for the photodiode signal. | MMC1a and MMC1c seen through the viewport of the camera. The stainless steel plate at the bottom allows to view mirror BDIMC1. | |
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| Pick-off mirror, MMC1a, MMC1c, and stainless steel mirror with camera viewport in the back. | Beam director mirror and pick-up mirror for the transmitted beam; on the right hand side the pick-ups for the beam from MMC1c. | |
