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MicroFocus Dual-Speed Telescope Focus Knob

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MicroFocus Products

 
Celestron
C8
See Complete List of Equipment at Right



MRFC8
$2
39
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MicroFocus for Celestron C8

Celestron early C5 (dual fork arm), C8, C8+, C8-S, C8-SGT, Classic 8, Celestar 8, CGE 800, G-8, Great Polaris C8, NexStar 8 GPS, Polaris C8, Powerstar 8, Super C8, Super C8+, Super Polaris C8, Ultima 8, Ultima 2000

 
Celestron
9" SCT
See Complete List of Equipment at Right



MRFC9
$239

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MicroFocus for Celestron 9" SCT

Celestron C9-S, C9-SGT, CG-9, CGE 925, G-9, NexStar 9 GPS, Ultima 9

NOTE

Due to changes in Celestron 9 inch telescopes, please verify the correct MicroFocus part number using the following chart:

Identifying the Correct MicroFocus for a Celestron 9" SCT  (Chart 1)
Part No. Style Identifying Characteristics
MRFC9 Classic Rectangular plate (scope housing) at base of focus knob
MRFC9 NexStar Rectangular plate (scope housing) at base of focus knob
MRFC8 CPC Orange Ring (scope housing) at base of focus knob
 
These pictures show the steps to install the Celestron 9 SCT MicroFocus.
1) Remove the original focus knob and cover plate (top left).  2) Install the replacement knob (top right).  3) Install the replacement cover plate and attached collar (bottom left).  4) Place the MicroFocus sleeve over the collar and tighten the thumb screw (bottom right, actually shows MOTOFOCUS sleeve).  5)  You are ready to go.  It's that easy!

 

 
Celestron
C11/C14
See Complete List of Equipment at Right

 


MRFC11
$239

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MicroFocus for Celestron C11/C14

Celestron C11, CG-11, CM-1100, Ultima 11, C14, CG-14, CM-1400, CM-1400GT

NOTE

The Celestron NexStar 11 and CGE 1100 do NOT use Classic C11 style optical tubes.  For MicroFocus for the NexStar 11 and CGE 1100 see MicroFocus for Celestron NexStar 11 GPS below.  To verify which MicroFocus version you need, check the knob ID against the following chart:

Identifying the Correct MicroFocus for a Celestron 11" SCT  (Chart 2)
Part No. Style Identifying Characteristics Knob ID
MRFC11 Classic Classic Orange or Black OTA 19mm (0.748")
MRFCPC11 CPC Orange Ring at base of focuser knob 21.8mm (0.858")
MRFNEX11 NexStar Gray Carbon Fiber OTA 22.8mm (0.898")

 

 
Celestron
CGE 1400



MRFCGE14
$2
39

Buy Now

MicroFocus for Celestron CGE 1400

Celestron CGE 1400

 
Celestron
CPC 800
Celestron CPC 800 GPS, CPC 925 GPS



MRFC8
$239

Buy Now

MicroFocus for Celestron CPC 800

Celestron C9-SGT XLT, CGE PRO 925 HD, CGEM 800 HD, CGEM 925 HD, CPC 800 GPS, CPC 925 GPS

NOTE See Chart 1 above if you have questions about this being the correct product.
 
Celestron
CPC 1100
CPC 1100 GPS



MRFCPC11
$239

Buy Now

MicroFocus for Celestron CPC 1100

Celestron CGE PRO 1100 HD, CGEM 1100 HD, CPC 1100 GPS

NOTE See Chart 2 above if you have questions about this being the correct product.
MicroFocus for the Celestron CPC 1100
 
Celestron
NexStar 11 GPS
Celestron C11-SGT, CGE 1100, NexStar 11 GPS



MRFNEX11
$239

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MicroFocus for Celestron NexStar 11 GPS

Celestron C11-SGT, CGE 1100, NexStar 11 GPS

NOTE See the Chart 2 above if you have questions about this being the correct product.
 
Meade Cassegrain
Hexagonal Knob
(See chart)



(Formerly MRFLXGPS)
MRFMH
$239
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Meade Cassegrain
Round Knob
(See chart)



(Formerly MRFLX)
MRFMR
$239

Buy Now
MicroFocus for Meade Cassegrain Telescopes

Meade Cassegrain Telescopes (other than ETX)

Some Meade SCTs are not consistent in the focusing mechanism design, so we now identify the appropriate MicroFocus for your equipment by the style of the focus knob (see chart below). 
The piggy-backed MicroFocus works on ROUND FOCUS KNOBS ONLY, not on hex-shaped knobs.

NOTE




To verify which MicroFocus version you need, please check the Focusing Knob style against the following chart:

Identifying the Correct MicroFocus for Certain Meade SCTs  (Chart 3)
Part No. Knob Style* Identifying Characteristics*
MRFMH Hexagonal Six-sided Knob with Three Flat Sides
MRFMR Round Cylindrical
* See the picture at left to identify the Round Focusing Knob (left) vs. somewhat Hexagonal Focusing Knob (right).  The hexagonal knob has three flat "sides."  The other "sides" are curved.

 

 
Meade
ETX-LS 6"
Meade LS-6, LS-8



MRFLS6
$239

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MicroFocus for Meade ETX-LS 6"

Meade ETX-LS 6", ETX-LS 8", LS-6, LS-8, LT-6, LT-8


This image shows the back end of a MicroFocus with the internal coupler which slides over the supplied focus knob.
This is a picture of an older version of the MicroFocus mounted on an SCT.
This is a picture of an older version of the MicroFocus mounted on an SCT.
Prototype MicroFocus


What is MicroFocus?

MicroFocus is a push-on two-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 repeatability.  Mounting is easy and requires no drilling or tapping.


Customer Comments

"Drama-free purchase of what I thought would be an out-of-stock old part for an old MOTOFOCUS..."  (R. F. 09/2012)


Frequently Asked Questions (FAQ)


Q. What is the difference between a MicroFocus and MOTOFOCUS?
A. Both mechanisms are designed to be attached to the shaft of an SCT focuser knob (or the knob itself) to assist in focusing.  MicroFocus adds a slow-speed manual knob whereas MOTOFOCUS adds a hand unit and motor to automate movement of the telescopes focusing knob.