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The 5m mirror of the telescope on Mt Palomar, 1934
The 5m mirror for the telescope on Mt Palomar, California, on its grinding and polishing machine. The image was taken in 1934 when the casting of 65 tons of molten pyrex was made. The project for the construction of the Palomar observatory was led by the American astrophysicist George Hale (1868-1938). In 1929 he convinced the Rockefeller Foundation to donate six million dollars for building the 5m telescope. The first mirror made from fused quartz proved to be a failure. Hale next tried pyrex and the first experimental disc cast proved satisfactory. The grinding of the mirror was interrupted by the war and the telescope was finally completed in December 1947.
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The 5m mirror of the telescope on Mt Palomar, 1934
Description:
The 5m mirror for the telescope on Mt Palomar, California, on its grinding and polishing machine. The image was taken in 1934 when the casting of 65 tons of molten pyrex was made. The project for the construction of the Palomar observatory was led by the American astrophysicist George Hale (1868-1938). In 1929 he convinced the Rockefeller Foundation to donate six million dollars for building the 5m telescope. The first mirror made from fused quartz proved to be a failure. Hale next tried pyrex and the first experimental disc cast proved satisfactory. The grinding of the mirror was interrupted by the war and the telescope was finally completed in December 1947.
Credit:
SPL/Science Source
Unique identifier:
SS2316182
Legacy Identifier:
SK3363
Type:
Image
Size:
4446px × 3948px 2MB
Purpose / Rating
Tags
astrophysics
grinding 1934
mount palomar
mt. mount palomar telescope
optical observatory
palomar mirror
R114/0028
R114/028
R1140028
telescope
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