JMI EV-1n Telescope Focuser

$369.00

EV-1 Telescope Focuser

The Event Horizon EV-1 is a 2″ black-anodized aluminum focuser with rubber grip knobs and two-speed operation.  The focuser lifts up to 8 pounds.  Dual-speed manual controls are over 15 times finer (small outer knob) and 1½ times finer (large inner knob) than most rack-and-pinion focusers.  The two knobs have a 9:1 ratio.

The Newtonian version (EV-1n) mounts on a range of surfaces from a 7.25″ diameter, or larger, tube to a flat surface.

The Cassegrain version (EV-1c) is designed for use on 6″ to 16″ Cassegrain telescopes (e.g. SCT and Mak-Cas) with standard output threads.  It includes an SCT threaded output adapter to allow use of standard SCT equipment on the output side of the focuser.  The focuser gives 1/2″ of travel and is designed for fine focus after rough adjustment with the normal telescope focusing knob.

The Motorized option comes with a miniature motor and hand control unit.

41 in stock

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Description

Event Horizon 2-inch Crayford Telescope Focusers

 

EV-1n
Model 1
Newtonian Version
without Motor

EV1N
$369

EV-1 Telescope Focuser

The Event Horizon EV-1 is a 2″ black-anodized aluminum focuser with rubber grip knobs and two-speed operation.  The focuser lifts up to 8 pounds.  Dual-speed manual controls are over 15 times finer (small outer knob) and 1½ times finer (large inner knob) than most rack-and-pinion focusers.  The two knobs have a 9:1 ratio.

The Newtonian version (EV-1n) mounts on a range of surfaces from a 7.25″ diameter, or larger, tube to a flat surface.

The Cassegrain version (EV-1c) is designed for use on 6″ to 16″ Cassegrain telescopes (e.g. SCT and Mak-Cas) with standard output threads.  It includes an SCT threaded output adapter to allow use of standard SCT equipment on the output side of the focuser.  The focuser gives 1/2″ of travel and is designed for fine focus after rough adjustment with the normal telescope focusing knob.

The Motorized option comes with a miniature motor and hand control unit.

See the Differences Between Models, the EV Options, the Focuser Accessories Page and the Focuser Comparison Chart.  For additional equipment see the Smart Focus and DRO products.  (Specify all options and accessories when ordering.)

NOTE

Meade
Telescope
Users

Although the EV-1c can be plugged into the telescope’s base allowing control from a Meade hand unit, you will have better control with the JMI hand unit.  Our hand unit includes an electronic brake (not included in Meade systems), which stops the motor as soon as you quit pressing the keys, and linear voltage control for superior speed control.  Also, some older LX200 telescopes do not have enough power to properly run the motor on the low setting.

The Event Horizon focuser has a totally modular design.  EV-1nM product code signifies a Model 1 with a Newtonian base and a motor.  The EV-1 includes a dual-speed drive with mechanical counter.  Click Here to view the product at different angles.  See our Focuser Comparison Chart for complete specifications.
An older version of the EV-1cM Mounted on a Meade ETX-LS 6″ Scope

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