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  Telescope Accessories > Focusers (265 Items)

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JMI 1.5 inch Focuser Extension Tube, 2 inch Diameter
JMI 1.5 inch Focuser Extension Tube, 2 inch Diameter
Item No. 765-90100
Manuf. No. JMI ADPT2EXT

Extends the range of low-profile focusers. This extension tube does not include a compression ring.
 
Our Price: $49.99
Buy JMI 1.5 inch Focuser Extension Tube, 2 inch Diameter
 

JMI Reverse Crayford Focuser 2 inch RCF-1 Model 1 Newtonian Version with Motor
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JMI Reverse Crayford Focuser 2 inch RCF-1 Model 1 Newtonian Version with Motor
Item No. 765-61511
Manuf. No. JMI RCF1M

The JMI RCF-1 is a motorized reverse Crayford focuser designed to work with Newtonian Telescopes. It is a 2" black-anodized aluminum focuser equipped with knurled knobs and hand control. The RCF-1 features manual control for focusing, which is over 1 1/2
 
Our Price: $296.99
Buy JMI Reverse Crayford Focuser 2 inch RCF-1 Model 1 Newtonian Version with Motor
 

JMI DRO Encoder Assembly for JMI Focuser
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JMI DRO Encoder Assembly for JMI Focuser
Item No. 765-61350
Manuf. No. JMI DROEV

Required for Smart Focus and DRO Products
 
Our Price: $125.99
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JMI MOTOFOCUS for GSO Crayford Focusers
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JMI MOTOFOCUS for GSO Crayford Focusers
Item No. 765-61239
Manuf. No. JMI MFGSO…

The GSO and William Optics 2" Crayford focusers are available for SCT, Refractor and Newtonian telescopes.
 
Our Price: $169.99
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JMI Dual-Control Hand Unit for JMI MOTOFOCUS, MOTODEC and Focusers
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JMI Dual-Control Hand Unit for JMI MOTOFOCUS, MOTODEC and Focusers
Item No. 765-65010
Manuf. No. JMI HUDC

Dual-Control Hand Unit JMI MOTOFOCUS, MOTODEC & Focusers
 
Our Price: $79.99
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JMI Single-Control Hand Unit for JMI MOTOFOCUS, MOTODEC and Focusers
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JMI Single-Control Hand Unit for JMI MOTOFOCUS, MOTODEC and Focusers
Item No. 765-65000
Manuf. No. JMI HUSC

The single-control (controls one motor) linear voltage control (LVC) hand unit includes two forward and reverse buttons (red) and a two-position slow-speed switch (black)
 
Our Price: $67.99
Buy JMI Single-Control Hand Unit for JMI MOTOFOCUS, MOTODEC and Focusers
 

JMI Digital Focus Counters DFC for Meade SCT Telescopes
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JMI Digital Focus Counters DFC for Meade SCT Telescopes
Item No. 765-63005
Manuf. No. JMI DFCM

A manual version of Digital Readout, which replaces the focus knob of most Meade 8" or larger SCTs.
 
Our Price: $119.99
Buy JMI Digital Focus Counters DFC for Meade SCT Telescopes
 

JMI Motofocus Upgrade w/ focuser purchase
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JMI Motofocus Upgrade w/ focuser purchase
Item No. 765-63000
Manuf. No. JMI DFCMF

Upgrades a MOTOFOCUS unit with a piggy-back DFC at the time of purchase
 
Our Price: $96.99
Buy JMI Motofocus Upgrade w/ focuser purchase
 

JMI Next Generation 3 inch Crayford Focusers NGF-XTcM Model XT Cassegrain Version with Motor
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JMI Next Generation 3 inch Crayford Focusers NGF-XTcM Model XT Cassegrain Version with Motor
Item No. 765-61553
Manuf. No. JMI NGFXTCM

Next Generation 3 inch Crayford Focusers. NGF-XTcM Model XT Cassegrain Version with Motor
 
Our Price: $747.99
Buy JMI Next Generation 3 inch Crayford Focusers NGF-XTcM Model XT Cassegrain Version with Motor
 

JMI Next Generation 3 inch Crayford Focusers NGF-XTc Model XT Cassegrain Version without Motor
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JMI Next Generation 3 inch Crayford Focusers NGF-XTc Model XT Cassegrain Version without Motor
Item No. 765-61552
Manuf. No. JMI NGFXTC

Next Generation 3" Crayford Focusers. NGF-XTc Model XT Cassegrain Version without Motor
 
Our Price: $586.99
Buy JMI Next Generation 3 inch Crayford Focusers NGF-XTc Model XT Cassegrain Version without Motor
 

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