Welcome to the MMT Observatory


Latest News

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  • MMTO Closure

    Due to concerns over the Coronavirus pandemic, and the health and safety or our staff and their families, the MMT Observatory suspended nighttime operations for at least one week starting on Tuesday, March 17th. Given our goal and efforts to keep the MMT operational and efficient for our users, this was a difficult decision to have to make but we know that it was the right decision at the right time. Senior staff and other stakeholders will reassess the situation on Monday, March 23rd and make a decision to either restart operations on Tuesday, March 24th or extend the suspension. Be well.

  • POSTPONED Smithsonian Lecture Series on Astronomy

    This lecture has been postponed for Fall 2020. Eric Christensen, Principal Investigator of the Catalina Sky Survey, "Near Earth Objects", from Lunar Planetary Lab at the University of Arizona is the invited speaker for this upcoming Smithsonian lecture series. This lecture will be held Wednesday, March 18 at the Green Valley Recreation Center- West at 9:00 AM. Each lecture is 45 minutes, followed by a question-and-answer period. All lectures are free and open to the public. Click here for the dates and the list of all speakers and their topics. We hope to see you there!

  • Tours closed for the winter

    Tours are closed for the winter and will resume in the Spring 2020. We look forward to having you visit next Spring.

  • MMT Observing Schedule: January- April 2020

    The observing schedule for January - April 2020 can be found here.