The Event Horizon Focuser (EV) is a low-profile, friction-drive focuser designed for both the amateur and professional market. The highly acclaimed Crayford design (see below) permits tolerances up to 100 times better than conventional rack-and-pinion focusers. Zero image shift and zero backlash makes it fantastic for visual and photographic work and a must for CCD imaging.


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Product Image Price Item Name+

JMI Reverse Crayford 1" Focuser with Motor $274.00

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JMI Reverse Crayford 1" Focuser with Motor

JMI Reverse Crayford 1" Focuser with Motor For all RCF focusers you must specify whether you want a flat or curved base. For curved bases, you need to specify the radius. If you don't, you will get the standard size radius. Please specify...

JMI Reverse Crayford 2" Focuser $140.00

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JMI Reverse Crayford 2" Focuser

JMI Reverse Crayford 2" Focuser For all RCF focusers you must specify whether you want a flat or curved base. For curved bases, you need to specify the radius. If you don't, you will get the standard size radius. Place a note in the shopping...

JMI Reverse Crayford 2" Focuser with Motor $296.00

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JMI Reverse Crayford 2" Focuser with Motor

JMI Reverse Crayford 2" Focuser with Motor A 1.25" Reverse Crayford focuser. Motorized version include a standard hand unit. For all RCF focusers you must specify whether you want a flat or curved base. For curved bases, you need to...


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