Precision Spherical Optical Mirror ~f1.2 21” Diameter (Natick)

Precision Spherical Optical Mirror ~f1.2 21” Diameter 1

Precision Spherical Optical Mirror ~f1.2 21” Diameter 1 thumbnail

Tech Circle near Oak Street

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condition: good

make / manufacturer: Unknown

model name / number: NA

size / dimensions: 21” Diameter, 4” Thick

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This huge optical mirror must have come from some high-tech optical laboratory. It is 21 inches in diameter and about 4 inches thick with a roughly 24 inch focal length. Note that it appears to be spherical, not aspherical. Recently silvered, though the surface has a number of small pits. Weight: ~125 lbs.

post id: 7986370215

posted: 2026-10-19 16:15

updated: 2026-10-28 14:12

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Precision Spherical Optical Mirror ~f1.2 21” Diameter - free stuff -...

This huge optical mirror must have come from some high-tech optical laboratory. It is 21 inches in diameter and about 4 inches thick with a roughly 24 inch focal length. Note that it appears to be...