Caltech Image Collection

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120" disc mirror preparation, Corning, NY
120" disc mirror preparation, Corning, NY
Pot of glass entering beehive furnace, No Date
120" disc on table of 120" grinding machine
120" disc on table of 120" grinding machine
Disc is face up, and face is fine-ground so rib structure is visible through front surface., No Date
120" grinding and polishing machine
120" grinding and polishing machine
Drawing by Russell Porter signed R. W. P. and dated 1939. Palomar., 1932
120" grinding machine
120" grinding machine
Photo by F. Ellerman., No Date
120" grinding machine with 120" disc
120" grinding machine with 120" disc
Full sized grinding tool in position. Numerous funnels permit grinding material to be fed through the tool to the surface., No Date
120" machine
120" machine
Palomar., No Date
120" mirror ready for shipping
120" mirror ready for shipping
Photo by Ayres A. Stevens., No Date
130' radio telescope at Owens Valley
130' radio telescope at Owens Valley
Photo by Bob Hoggan. OVRO., October 1967

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