Historical Marker
Toole Avenue
Historical marker location:
Tucson, Arizona
( Marker is at the intersection of North Toole Avenue and North 5th Avenue, on the right when traveling north on North Toole Avenue.)
Marker installed: 2013
The world's largest solar telescope is located in Arizona: The Daniel K. Inouye Solar Telescope, located on the summit of Haleakala in Maui, Hawaii, is the largest solar telescope in the world. However, the next largest solar telescope, the McMath-Pierce Solar Telescope, is located at the Kitt Peak National Observatory in Arizona.