Extension tubes for ESATTO 3"

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Overview 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 E SATTO 3" since it's a micrometric focuser. For this reason we have designed these 40mm and 65mm extensions 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. Show more