Pouring concrete mirror substitute for the 200″ telescope

In collections

Details

Title: Pouring concrete mirror substitute for the 200″ telescope
Date: 1940
Original Format: photograph: print
Agent Subjects: Palomar Observatory
Collection: Watterson Collection
Series/File: Academic Divisions
Caltech Archives ID: 10.22.33-1
Copyright: The Caltech Archives has not determined the copyright status of this image.