The Reginald Buller 21-inch Visitors' Telescope Building

This building is the only one with a deck for a catwalk. The 21-inch reflecting telescope housed inside is used by SDSU general education students for their Astronomy classes and by SDSU for special public outreach events. From the deck, there is a commanding view to the west, where one can just barely make out the shape of San Diego Bay and Point Loma on the horizon.

Next to the deck is a unique sundial.

photo of the 21-inch dome from the

Go inside the dome.

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