Welcome to the MMT Observatory

Latest News

  • Click here for more MMTO news and highlights
  • Tours

    Reservations for tours are now being taken for the months of October and November. They will take place on most Mondays, Wednesdays, and Fridays. Tours end in mid-November due to weather concerns and resume in mid-March. Various maintenance activities are currently continuing, resulting in no tours scheduled during September. Please call 520-879-4407 to make a reservation or for more information.

  • White Dwarf Mergers

    Read about new developments regarding merging white dwarfs that were first discovered from observations taken at the MMTO.

  • MMTO Observing Schedule

    The observing schedule for August 22-December 31, along with program titles, can be found here.