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Welcome to the MMT Observatory

How to acknowledge the MMT in your publication.

Latest News

Decommissioning Hecto the spring of 2026

The MMT Observatory (MMTO) will be decommissioning Hectospec and Hectochelle on May 1st, 2026 in order to prepare MMTO for the arrival of ViaSpec. The decommissioning process for both Hectospec and Hectochelle will start on May 1, 2026. Thus, …

New Vistas in Astronomy Lecture Series, January-April 2025

Whipple Observatory’s New Vistas in Astronomy lecture series returns for its 56th year. The first lecture of the series will be held Thursday, January 30 at the Green Valley Recreation Center- West at 9:00 AM. All lectures are free …

MMT Observing Schedule: February 2025 – July 2025

The observing schedule for February 2025 – July 2025 can be found here.

Public Science Center is now OPEN!

The Science Center is now open! The Science Center is currently open on Fridays only from 10:00 a.m. to 4:00 p.m. (closed on Federal holidays).
In order to ensure the best experience possible for the many guests we …