Welcome to the MMT Observatory

Latest News

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  • Mt. Hopkins Road Work

    Work continues on the Mt. Hopkins Road with openings scheduled at 8:00-8:30am and after 3:00pm. Traffic before 8:00am should coordinate via radio and expect delays. The road will be closed from 8:30am-3:00pm each weekday through the end of July and into August while improvements are being made. An updated schedule is provided each Friday.

  • Summer Tour Update

    Summer tours are currently on hold due to road work scheduled for the Mt. Hopkins Road. We appreciate your patience while the needed maintenance is taking place. Current plans are to resume the tours in September. Updates will be posted here so check back!

  • Summer Shutdown Schedule

    Summer shutdown begins on Tuesday, July 25. The observatory will reopen on Tuesday, August 22.