Amended restrictions on humidity, wind and dew point applicable to opening and closing of the domes of the ESO 3.6-metre and the New Technology Telescope (NTT) have been recently released. Both telescopes wil be closed when humidy reaches 80% and can only be opened when it is below 70% for 30 minutes. For the ESO 3.6-metre, the new wind speed restriction will be 18 ms-1. The full listing of the weather restrictions for La Silla telescopes is available here (PDF). These stricter limits lead to a very small increase in weather downtime as result of increased telescope and instrument safety.
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New Weather Restrictions for La Silla ESO Telescopes
Published: 24 Feb 2017
