From time to time the JCMT is closed due to major maintenance work. The next scheduled closure of the JCMT will occur from April 30th 2018 to mid May 2018. During this time the Gore-Tex membrane windblind will be removed to provide access to the Secondary Mirror Unit for maintenance work. As the telescope will be unavailable for science during this time the SCUBA-2 Gas Handling System will also be worked on. SCUBA-2 will be warm during this period and should back to operational temperature/available for science use by the end of May.
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