When installing ESATTO 3″ in a telescope with a long travel focuser (such as those usually found on refractors), it is necessary to take into account the lower travel of ESATTO 3″ since it’s a micrometric focuser. For this reason we have designed this 65mm extension that can be installed between ESATTO 3″ and the telescope tube. A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser.

  • 65mm extension that can be installed between ESATTO 3″ and the telescope tube
  • A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser
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