Sat, Oct 31 · 12:00 PM MST
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COST $25
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Richard F. Caris Mirror Lab
Richard F. Caris Mirror Lab tours have once again been recognized by Tripadvisor as being among the Top 10% of Things to Do Worldwide—for the second consecutive year!
Each year, Tripadvisor celebrates travelers’ favorite experiences across the globe, based on reviews and ratings collected over 12 months. Thanks to the enthusiastic feedback from our visitors, the Mirror Lab tour continues to rank among the world’s most highly rated experiences.
Come see for yourself why guests from around the world rave about this one-of-a-kind behind-the-scenes look at the science, technology, and craftsmanship behind some of the world’s largest astronomical mirrors!
Tour Duration: 90 minutes
Location: Steward Observatory, 933 N. Cherry Ave., University of Arizona
Explore the cutting-edge of astronomical innovation on this 90-minute guided tour of the Richard F. Caris Mirror Lab at the University of Arizona. Learn how pioneering engineering, optical science, and precision manufacturing come together to create the world’s largest and most advanced telescope mirrors—each 8.4 meters (27 feet) in diameter.
Located beneath the U of A’s football stadium, the Mirror Lab is the birthplace of mirrors for the Giant Magellan Telescope, a revolutionary new instrument with a 25-meter primary mirror composed of seven of our 8.4-meter segments. This next generation of telescopes will transform astronomy—probing the early universe, revealing the formation of the first stars, and potentially detecting signs of life on distant exoplanets.
The tour begins at the historic Steward Observatory, U of A’s first research department, established in 1917. After an introductory presentation in our iconic white-brick dome, we’ll walk to the Mirror Lab for an up-close look at the unique processes involved—from melting glass to precision polishing and optical testing.
Join us and discover how the University of Arizona is shaping the future of space exploration and astronomical discovery.
INFORMATION
Dates Monday through Friday
Time
Start times vary depending on the day. Please go to the Mirror Lab tour calendar for options. Tour duration is about 90 minutes.
Please arrive 15 minutes before the start of the tour to check-in with our tour leaders at Steward Observatory, 933 Cherry Ave., Tucson, AZ. The tour begins promptly.
Requirements
Important Tour Information
A major portion of the tour involves walking, climbing, and descending stairs.
Required - Flat, closed-toed shoes. No sandals. Guests without appropriate footwear will not be permitted into the Mirror Lab facility. Sneakers are recommended for safety and comfort.
No personal belongings (backpacks, purses, large bags, etc.) are allowed unless they fit comfortably in your pockets. Please leave these items in your vehicle.
A disposable water bottle is allowed but must be discarded before entering the Mirror Lab facility.
Age: 10+ years – all minors must be accompanied by an adult.
If you have questions concerning access or disability-related accommodations, please contact 520-626-8122 or rfcml.tours@gmail.com(link sends e-mail) - EMAIL is preferred.
Cost Adults $25 | Students with ID $20
Self-Pay (Motorcycles are not permitted to park in Cherry Garage.)
For parking options, please call U of A Parking and Transportation at (520) 626-7275.
Location Tour starts at the Steward Observatory lobby
📍 933 N. Cherry Ave, Tucson, AZ 85721
(just north of the U of A football stadium)
Contact Email is preferred rfcml.tours@gmail.com | 520-626-8122, please leave a message in the event we are unable to answer.
Quick Links
Mirror Castings
Frequently Asked Questions
For available dates, times
and to purchase your Mirror
Lab tickets.
Tour starts at the lobby of Steward Observatory
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