SITE

Site and Operational Conditions

Before determining the detailed requirements for the submillimeter telescope, we investigated the weather statistics of a possible site for the LST, i.e., the ALMA site. We found that, for a fraction of time in the year (except for two months in the Altiplano winter, i.e., January and February) there is an approximately 50 % probability of a wind speed of < 10 m/s and precipitable water vapor (PWV) < 4 mm. We set these conditions as the basic operation conditions for the submillimeter observations at frequencies higher than 300 GHz.  We expanded the operation condition to a wind speed range of < 20 m/s for millimeter observations. Note that the basic LST requirements described in TELESCOPE were developed for the submillimeter operation conditions.

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