Latest News
Decommissioning Hecto the spring of 2026
Mar 17, 2025
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
Jan 27, 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
Jan 25, 2025
The observing schedule for February 2025 – July 2025 can be found here.
Public Science Center is now OPEN!
Jan 24, 2025
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 …
Remembering J. T. Williams
Jan 23, 2025
Long-time MMTO engineer J.T. Williams passed away on December 3, 2024 at the age of 88. J.T. was a huge presence on Mount Hopkins from the very early days. He was a major contributor to the planning, construction, commissioning, and …
MMT Observing Schedule: August 2024 – January 2025
Jun 17, 2024
The observing schedule for August 2024 – January 2025 can be found here.
Whipple Observatory And TSO Team Up For Holst’s Planets
Apr 08, 2024
On April 12 and 14 the TSO and Whipple, along with MMT staff, are teaming up to bring the audience a rich astronomical experience that starts in the lobby and finishes on the stage for Holst’s Planets, the final …
MMT at the Tucson Festival of Books – Science City March 9-10, 2024
Mar 04, 2024
The Tucson Festival of Books is back! Visit MMT Observatory in Science City’s Science of Tomorrow tent! The MMT Observatory presents a hands-on demonstration of multi-object spectroscopy and how it’s implemented at the MMT. Visitors to the MMT booth can …
MMT Observing Schedule: February 2024 – July 2024
Dec 19, 2023
The observing schedule for February 2024 – July 2024 can be found here.
MMT Observing Schedule: August 2023 – January 2024
Jul 06, 2023
The observing schedule for August 2023 – January 2024 can be found here.