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    1. Jiaxing Rui Xing Optical Instrument Co., Ltd 簡體中文版   English
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      全國熱線0573-82331687
      Caliber: 80mm
      Focal length: 500mm (f/6.25)
      Objective type: three chip fully separated composite achromatic
      Net weight: 3.10kg
      Resolution: 1.45 sec
      Visual limit magnitude: 12
      Outer diameter of lens barrel: 90mm
      Length of lens tube (Extended): 470mm
      Length of lens tube (indent): 405mm



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