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0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. Optimized for Evolux 82mm refractors.

  • 82mm, f/5.8, 477mm focal length
  • 55mm back focus
  • 36mm illuminated field
  • Includes one ED element
  • M56x1 female / M48 male threads
  • Includes rotator/adapter with built-in cavity for 2-inch filters