This is an aluminized 8 inch diameter parabolic mirror. The mirror was figures from a blank of poured Pyrex glass. The focal length is 130 inches resulting in an f-ratio of 16.25. Condition of the mirror is excellent just a couple of voids in the coating at the very margin where it was secured by a retaining ring. Thickness at the margin is 1.39 inches with a relief of about 0.125 inches on the back of the mirror.

Location OA 14C

Photo set 1074

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