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JMI - EV-XT Newtonian Extreme Telescope Focuser without Motor- 3"


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Availability: Available - Ships in 3-5 Days


Available - Ships in 3-5 Days

Manufactured by: Jims Mobile, Inc. (JMI)

JMI - EV-XT Newtonian Extreme Telescope Focuser without Motor- 3"


JMI EV-XT Extreme Telescope Focuser - 3"



A 3" black-anodized (gold-anodized optional) aluminum "Extreme" focuser designed for use on large (10" to 16") Cassegrain Telescopes (EV-XTc) with standard output threads and Newtonian Telescopes (EV-XTn).  A 2" Eyepiece Adapter is included.  The Newtonian version includes a removable combination base (works on 10" radius up to a flat surface).  The manual version of the EV-XT lifts up to 8+ pounds and the motorized version up to 12 pounds.  Manual "Nano Drive" control is approximately 13 times finer than most rack-and-pinion focusers.  Regular motorized versions include a standard hand unit.

See the SCT Accessories Diagram, the Focuser Comparison Chart and the Focuser Accessories Page.  For additional equipment see the Smart Focus and DRO products.  (Specify all options and accessories when ordering.)







Product Series

JMI Carrying Cases include crush-resistant die-cut foam, contoured to safely hold your telescope during transport. The larger cases are manufactured by JMI with 1/4″ plastic for super strong support. Most cases include an extra handle on one end with wheels on the opposite end for easily maneuvering the case without lifting the entire weight. These attractive and efficiently designed cases are substantially smaller than the original shipping box and even smaller than most soft cases. They protect your investment while making it easier to move your scope from one location to another.

Additional Information

Name JMI - EV-XT Newtonian Extreme Telescope Focuser without Motor- 3"
Manufacturer Jims Mobile, Inc. (JMI)
Manufacturer Part No EVXTN