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Vatican Advanced Technology Telescope: Window to the Cosmos

Explore the universe from the Vatican's high-tech telescope atop Mount Graham, Arizona. A unique intersection of faith and science.

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The Vatican Advanced Technology Telescope (VATT), perched atop Mount Graham in Arizona, is a testament to the Vatican's long-standing interest in astronomy. As part of the Mount Graham International Observatory, the VATT contributes significantly to astrophysical research, offering a unique blend of faith and science.

A brief summary to Vatican Advanced Technology Telescope

Local tips

  • Check the schedule for public viewing nights or tours offered through Eastern Arizona College's Discovery Park Campus (mid-May through October).
  • The temperature drops significantly at night; dress in layers.
  • Book tours in advance, as permits are required to enter the Mount Graham International Observatory.
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Getting There

  • Car

    From Safford, head west on US-70 W for approximately 18 miles. Turn right onto AZ-366 N (Swift Trail). After about 5 miles, look for signs for the Vatican Advanced Technology Telescope. Follow the signs; the observatory will be on your left. Parking is free.

  • Public Transport

    Take a Greyhound or local bus to Safford. From there, use a rideshare service (Uber/Lyft) or taxi to reach the Vatican Advanced Technology Telescope, as public transport options are limited in the area. A rideshare from Safford to the telescope costs approximately $15-$25, depending on demand.

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Discover more about Vatican Advanced Technology Telescope

Located on Mount Graham, near Safford, Arizona, the Vatican Advanced Technology Telescope (VATT) is a remarkable astronomical observatory operated by the Vatican Observatory. This location, far from city lights, provides exceptionally clear skies, ideal for studying the cosmos. The VATT is part of the Mount Graham International Observatory (MGIO), which also houses other powerful telescopes. The Vatican's interest in astronomy dates back centuries, driven in part by the need to determine the dates for Easter and other religious holidays. In the late 19th century, Pope Leo XIII formally re-founded the Vatican Observatory to promote dialogue between science and the Church. Over time, increasing light pollution near Rome led the Observatory to establish a research group in Tucson, Arizona, in 1981. This eventually led to the construction of the VATT in 1993, in collaboration with the University of Arizona's Steward Observatory. The VATT boasts a 1.8-meter primary mirror, built using innovative spin-casting techniques. This technology allows astronomers to observe distant galaxies, study stellar evolution, and search for exoplanets. The telescope's location at a high altitude (10,469 feet) further enhances its observational capabilities. While the VATT is a research facility and not generally open to casual visits, Eastern Arizona College's Discovery Park Campus offers tours of the Mount Graham International Observatory from mid-May through October. These tours provide insights into the mountain's geology, history, and the work conducted at the observatories.

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