Rotating Mirror Furnace The VATT has pioneered the new technology of creating large, lightweight, stable mirrors in a rotating furnace (see picture to right). With the VATT we are pursuing long-term research programs which, although they were the hallmark of research at Castel Gandolfo, we have never been able to carry out before in Tucson. Thus from its two centers, located at Castel Gandolfo and at Tucson, the Observatory is continuing various current studies and international collaborations.
 
VATT As translated by Dr. Martin McCarthy, S.J., the dedication plaque of the VATT reads:
VATT Plaque This new tower for studying the stars has been erected during the XV year of the reign of John Paul II on this peaceful site so fit for such studies, and it has been equipped with a new large mirror for detecting the faintest glimmers of light from distant objects. May whoever searches here night and day the far reaches of space use it joyfully with the help of God.


The library at Castel Gandolfo contains more than 22,000 volumes and possesses a valuable collection of rare antique books including works of Copernicus, Galileo, Newton, Kepler, Brahe, Clavius, and Secchi. In addition there is a unique meteorite collection from which a knowledge of the early history of the solar system is being derived. Research results are published in international journals. The Annual Report is distributed to more than 400 institutes around the world.
Vatican Observatory