A costly, complex instrument, the 13-inch reflector was one of the most advanced astrographs in the world when it was finally operational in the spring of 1929.   The very large plates could capture images down to the 15th Magnitude. 

Clyde spent many long, cold hours alone at this device, his eye fixed to the guide scopes to make sure the big telescope tracked true.   Glamorous in retrospect, the actual work was tedious and lonely.