European Southern Observatory New Technology Telescope

General :
Observations :
Operations :

Untwist

In the building control room an Azimuth turn counter displays the network fiber twists.

When the absolute value of the twist display is over 5 :

• start telescope
• type untwist in a wt5tcs xterm window then
• copy the twist counter displayed value in the entry box
• click UNTWIST button
• YOU MUST TAKE ADVANTAGE OF THE BUILDING ROTATION TO
  CHECK DISTANCE BETWEEN THE fix concrete part AND THE rotating metallic part
  OF THE BUILDING BASEMENT ( at floor level).
• Report any contact or noticeable distance variation between both to coordinator, team leader and dome mechanics.

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