Summer tours are currently on hold due to pending 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!

An updated May - August MMT observing schedule, along with Program Titles, can be found here. Summer shutdown begins on Tuesday, July 25. The observatory will reopen on Tuesday, August 22.

MMTO staff have been preparing for the arrival this fall of the Binospec instrument, a wide-field multi-object optical imaging-spectrograph. A place in the common building basement is also being prepared for the slit mask cutter. More information on the instrument can be found here.