Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Hall Donald F2

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Hall Donald F2

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Image title: 
Kitt Peak Polishing Tool
Credit line: 
Kitt Peak National Observatory, courtesy AIP Emilio Segrè Visual Archives, Physics Today Collection

Kitt Peak Master Optician John Richardson (right), with help from Engineer Larry Barr (left) and Project Scientist Donald Hall, controls the placement of the optical polishing tool, above, onto a possible future 15-meter telescope mirror element which is surrounded by the novel mechanical glass bending fixtures that enable paraboloids to be polished as simple spheres.

Photo date: 
Circa September 1981
Original format: 
1 photographic print (black and white; 10 x 8 inches)
Hall, Donald Norman Blake