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User Manuals for Focusers

You have selected the product series Optics - Telescopes - Accessories - Focusers. Now choose the brand, model or product code you are looking for. If it is not available, you can request it from customer support.Manufacturers – select a brand:
Alpine Astronomical - Celestron - Explore Scientific - iOptron - JMI Telescopes - Konus - Lumicon - Others - Tele Vue - Vixen Optics

Showing: 1-10 productsTotal: 111 products
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JMI Telescopes Event Horizon EV-1R for
Rating: 5 of 5
JMI Telescopes Event Horizon EV-1R for The JMI Telescopes Event Horizon EV-1R is a 2" black-anodized aluminum focuser with rubber grip gold knobs. The focuser lifts up to 8 pounds. Dual-speed manual controls are over 15 times finer (small outer knob) and 1.5 times finer (large inner knob) than most rack-and-pinion focusers. The EV-1R mounts in many refractors with an inside diameter of...
JMI Telescopes Motofocus Motor
Rating: 3 of 5
JMI Telescopes Motofocus Motor This JMI Motofocus Motor is designed for the William Optics Crayford Focuser Configuration 7. The motor is added to the stock focuser, so focusing is done with a touch of a button on the included hand control unit. The 3-speed hand control unit lets you focus fast or at 2 different degrees of slow. It is not possible to have manual control with th...
JMI Telescopes MicroFocus for Celestron NexStar
Rating: 3 of 5
JMI Telescopes MicroFocus for Celestron NexStar The gray carbon fiber MicroFocus for Celestron NexStar 11 GPS Telescope from JMI Telescopes is a push-on 2-speed manual focus mechanism that attaches to the shaft of an SCT focuser knob (or the knob itself) for precise focusing. It includes separate knobs for coarse and fine adjustments with a numeric dial indicator for improved accuracy and repea...
JMI Telescopes Event Horizon EV-2RM Focuser
Rating: 3.5 of 5
JMI Telescopes Event Horizon EV-2RM Focuser The JMI Event Horizon EV-2RM is a 2" black-anodized aluminum focuser with gold anodized knobs with rubber grips, and single-speed operation. The focuser lifts up to 8 pounds. Single-speed manual control is over 1.5 times finer than most rack-and-pinion focusers. The EV-2RM mounts in many refractors having one of two different inside diameters...
JMI Telescopes Event Horizon EV-3RM Focuser
Rating: 4.5 of 5
JMI Telescopes Event Horizon EV-3RM Focuser The JMI Event Horizon EV-3RM is a 2" black-anodized aluminum focuser with silver anodized knobs, and single-speed operation. The focuser lifts up to 4 pounds. Single-speed manual control is over 1.5 times finer than most rack-and-pinion focusers. The EV-3RM mounts in many refractors having one of two different inside diameters of approximatel...
JMI Telescopes Event Horizon EV-2R for
Rating: 3 of 5
JMI Telescopes Event Horizon EV-2R for The JMI Telescopes Event Horizon EV-2R is a 2" black-anodized aluminum focuser with rubber grip gold. The focuser lifts up to 8 pounds. Manual controls are over 1.5 times finer (large inner knob) than most rack-and-pinion focusers. The EV-2R mounts in many refractors an inside diameter of approximately 3.5" or 3.75". Partial List of Refractor Tel...
JMI Telescopes Event Horizon EV-3R Focuser
Rating: 5 of 5
JMI Telescopes Event Horizon EV-3R Focuser The JMI Event Horizon EV-3R is a 2" black-anodized aluminum focuser with silver anodized knobs, and single-speed operation. The focuser lifts up to 4 pounds. Single-speed manual control is over 1.5 times finer than most rack-and-pinion focusers. The EV-3R mounts in many refractors having one of two different inside diameters of approximately ...
JMI Telescopes EV-3CM Focuser for Cassegrain
Rating: 3 of 5
JMI Telescopes EV-3CM Focuser for Cassegrain The JMI EV-3CM is a fine motorized rack-and-pinion focuser designed to work with Cassegrain telescopes from 6" to 16" diameter. It is a 2" black-anodized aluminum focuser equipped with knurled knobs, standard brass ring and reducer to accept 1.25" eyepieces. The EV-3CM can support up to 4 pounds. It features manual control for focusing, ...
JMI Telescopes Motofocus for Vixen VC200L
Rating: 5.0 of 5
JMI Telescopes Motofocus for Vixen VC200L Focusing is made easy with the JMI Motofocus MFV200 for the Vixen VC200L telescope. This Motofocus requires no drilling or tapping for mounting. It is a user friendly hand control with an electric focus motor that attaches to the shaft of a focuser knob (or the knob itself). It is battery operated and comes with the 9-volt battery. The Motofocus o...
JMI Telescopes Drawtube Upgrade for RCF
Rating: 4 of 5
JMI Telescopes Drawtube Upgrade for RCF The JMI Drawtube Upgrade is intended for the Meade Starfinder telescope. It is only available for 1.25" RCF focusers and can be extended up to 4.6". This drawtube is best used for prime-focus photography. Table of Contents ...
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Showing: 1-10 productsTotal: 111 products


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