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October 23, 2008JMI NGF 3″ Focuser-Cassegrain w/ motor NGFXTCMItem No. 765-61553 NGF-XT A 3″ black-anodized (gold-anodized optional) aluminum “Extreme” focuser designed for use on large (10″ to 16″) Cassegrain Telescopes (NGF-XTc) with standard output threads and Newtonian Telescopes (NGF-XTn). The Cassegrain version includes a 2″ Eyepiece Adapter. The Newtonian version includes a removable combination base (works on 10″ radius up to a flat surface). The manual version of the NGF-XT lifts up to 8+ pounds and the motorized version up to 18 pounds. Manual “Nano Drive” control is approximately 13 times finer than most rack-and-pinion focusers. Regular motorized versions include a standard hand unit.
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