Members of the general public are welcome to visit the 12 Meter Telescope after making prior arrangements with us. Individuals or groups wishing to inquire about a tour of the 12 Meter Telescope should contact us via email or phone (520-882-8250 x110). Note that the 12 Meter Telescope will close permanently on August 1, 2000. We will no longer be able to offer tours to the public after this date.