Large refracting telescope

A large refracting telescope with a 40-inch lens was constructed, reaching the limits of the arts. It was the largest of its kind and marked the limits of refracting telescopes.
 Clark England 1897 Large refracting telescope

A large refracting telescope with a 40-inch lens was constructed, reaching the limits of the arts. It was the largest of its kind and marked the limits of refracting telescopes.