With the installation of the Vixen dual speed focuser, the Vixen telescope's pinion and rack focusing system can be improved to provide finer focus adjustments Allows dual speed focusing with coarse and fine adjustments.The dual speed focuser can be installed later on the rack and pinion focuser, removing one of the focus knobs attached to it Dual speed focuser allows 1/7 speed focus and can be mounted on either side of the focus shaft (Not suitable for VMC95L, VMC110L, VMC260L, VMC330L, A70Lf, A80Mf, ED80Sf and R130Sf)
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