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  • Description
  • Specifications
  • 34mm fully illuminated field, compatible with both APS-C and full frame sensors
  • 89mm back-focus (55mm when back focus spacer and M48 ring installed)
  • Drops f/ratio from native f/8 (1200mm) to f/6.2 (930mm)
  • Reduces exposure time by 66% compared to native f/8
  • 2.22 x 1.48-degree field of view when used with a full frame camera
  • 1.45 x 0.97-degree field of view when used with APS-C crop sensor 
  • Only compatible with Evostar 150DX focuser
  • Includes reducer, metal thread-on caps, back focus spacer and M48 thread adapter
  • Built-in 2" filter cell for mounting filters into light path

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