JMI Telescopes EV-XT 3" Motorized Crayford Focuser for Newtonian Telescopes

The EV-XT 3" Motorized Crayford Focuser from JMI Telescopes is a replacement focusing system for larger Newtonian telescopes. It is capable of supporting and lifting up to 12 pounds. This is important for astroimaging, astrophotography or when using heavy eyepieces or accessories. The Crayford-style is able to achieve highly precise focusing by its unique metal-on-metal friction system. Since it doesn't rely on tracks and gears, minute adjustments are possible to a degree that rack-and-pinion style focusers are incapable of. The focuser is designed for Newtonian telescopes with mounting holes set 2.75" apart on-center and tube diameters from 10" up to a flat surface.