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  • There is often a problem with off-axis systems or folding mirror attachments, where the receptacles of normal eyepieces is just 1-2cm too short to be able to adjust the sharpness level properly.
  • Optical path length 18.5mm
  • 1¼" filter thread on both sides and can be screwed into almost every 1¼" eyepiece.
  • The inner dimensions are prepared for holding the lenses of our glass path correctors 1:1.25 and 1:1.7