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    1. Jiaxing Rui Xing Optical Instrument Co., Ltd 簡體中文版   English
      You are here: Home >>  產品中心 >>  停產系列 >>  AL系列 >>  View Details
      Caliber: 90mm
      Focal length: 600mm (f/6.67)
      Objective type: three chip fully separated composite achromatic
      Net weight: 3.40kg
      Resolution: 1.29 sec
      Visual limit magnitude; 12.3
      Outer diameter of lens barrel: 90mm
      Length of lens tube (Extended): 550mm
      Length of lens tube (indent): 500mm