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158-inch mirror blank

[KPNO 4m primary]

About this image

The 158-inch mirror blank (now the 4-meter) upon its arrival at KPNO. In the picture from left to right are Dr Dave Crawford, Mr Dinsmore, unidentified, unidentified, Mr Jim Miller. December 1971. (Note: although the original design called for a 150-inch mirror, it was cast rather larger and cut back to 158 inches, which was the largest the mirror could be over the design size and still fit the telescope.)

More: history page, telescopes page.


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