20-Inch-Telescope-Mirror

Perkin Elmer/Boller & Chivens 20" F8 primary telescope mirror

Per John Urciolo

Regarding the mirror... It came from a former NASA facility that excessed it along with the Unertyl mount. There are no specific numbers on any part of the mirror or its heavy circular housing. I was able to determine that it was made by Perkin Elmer/Boller & Chivens from the original government sheets. No additional information such as a model or serial number was provided by NASA. The Unertyl mount is intended to allow X-Y positioning of the mirror while holding it securely on an optical bench (for optical calibration??). I am assuming this mirror to be parabolic due to the fact it was intended to the best of my knowledge to ultimately be used in a telescope.

My Deductions The central hole appears to be about 4 inches in diameter.