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The multimode optical fiber and the 5 um slit have slipped out of alignment. OSELOTS requires manual realignment.
POSSIBLE SOLUTION(S):
Be warned, this is a ~1 hour process. We are working on designing a more user-friendly repair process. Here are the steps (somewhat difficult to describe in text):
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Only one
- Remove the rubber baffle around the cage system connecting slit to central column
- Unwraps by hand
- Not shown in photo below
- Use a small, imperial hex key to just loosen (DO NOT REMOVE ALL THE WAY) the small screws locking the cage into the central column
- In the hex key set provided with the OSELOTS toolkit, the key you need is the small, red imperial key
- Disconnect the slit holder from the support post, just to the right of the entrance hole
- We recommend unscrewing the small, horizontal, silver beam from the holder of the optical slit, keeping the larger poster pieces in place
- You should first loosen the screw locking this silver post in place, and then rotate it
- Slide the cage posts holding the slit and fiber tip out the front hole of OSELOTS
- If all the screws have been appropriately loosened, the whole front of the cage system should cleanly slide out.
- Connect a light source (like the HG-2 calibration lamp) to lens-end of the optical fiber
- See