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Questar Telescope competitor

Questar Telescope competitor--- 0ptical Technuques, inc.  O.T.I. Quantum 100, 4" with synchronous  RA drive. Very rare, 1977 first edition nameplate on drive. Has 1.25 inch 90 degree diagonal output as well as a prime focus straight output. Adjusting main mirror introduces no coma. Main mirror correction is rated 1/20th wavelength. Same optical parts that Questar used(their competitor). This a rare scope the same as Questar except is a 4", not 3.5". Comes in a nice padded maple carry case, a out 38 pounds. Excellent condition, and mirror is excellent aluminized. Price.......call