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Digital Focus Counter Products

 
Celestron
SCTs
See Complete List of Equipment at Right

 


DFCC
$119

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DFC for Celestron SCTs

Celestron early C5 (dual fork arm), C5 / C5+ (single fork arm), C5-S, C5-SGT, C8, C8+, C8-S, C8-SGT, C11, C11-SGT, C14, Celestar 8, Celestar 8 Deluxe, CG-11, CG-14, CGE 1100, CGE 1400, Classic 8, CM-1100, CM-1400, CPC 800 / 925 / 1100, Fastar 8, G-5, G-8, Great Polaris C8, NexStar 8 GPS, NexStar 11 GPS, Polaris C8, Powerstar 8, Super C8, Super C8+, Super Polaris C8, Ultima 8 / 11

 A manual version of Digital Readout, which replaces the focus knob of most Celestron SCTs.  (Specify telescope make, model and year.)

NOTE The top two pictures show the front and back of the manual DFC designed for the Meade SCT.  Inside the back end, you can see the coupler that attaches to the mounting collar (not shown).  The bottom images show parts included with the DFC for the Celestron C8.  They are (from left to right) the mounting collar, replacement knob, coupler and DFC body including sleeve, counter and knob.

 

 

 
JMI
MOTOFOCUS
See Exceptions at Right*

 


DFCMF
$99

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DFC for JMI MOTOFOCUS

Upgrades a MOTOFOCUS unit with a piggy-back DFC at the time of purchase (see exceptions below).

NOTE

* The piggy-backed DFC is not available for the Meade ETX Series, Celestron non-GPS NexStar 5/8 Series and Celestron SP6 telescopes because of the very small size or difference in style of the MOTOFOCUS motor.

After-purchase upgrades are available for rack-and-pinion MOTOFOCUS units (except those listed above), at an additional cost for labor.  Call for details.

DFC can be piggy-backed on our regular MOTOFOCUS units (not upgradable after purchase).  (Shown with old-style hand unit)
The DFC display is a three-digit mechanical counter.  Most MOTOFOCUS units can also be equipped with our Digital Read Out (DRO) system.

 

 
Meade
SCTs
See Complete List of Equipment at Right

 


DFCM
$119

Buy Now

DFC for Meade SCTs

Meade 203SC, 2080, 2120, Gem mounted 2080 / 2120, Basic (2080 / 2120), LX2, LX3, LX5, LX6, LX10, LX50 7" Maksutov / 8" / 10", LX90, LX100 8" / 10", LX200 7" Maksutov / 8" / 10" / 12" / 16", LX200GPS 8" / 10" / 12" / 14" / (16" ?), LX200R 8" / 10" / 12" / 14" / (16" ?), LXD55 SC-8, LXD75 SC-8

A manual version of Digital Readout, which replaces the focus knob of most Meade 8" or larger SCTs.  (Specify telescope make, model and year.)  The piggy-backed DFC works on ROUND FOCUS KNOBS ONLY, not on hex-shaped knobs.

NOTE The top two pictures show the front and back of the manual DFC designed for the Meade SCT.  Inside the back end, you can see the coupler that attaches to the mounting collar (not shown).  The bottom images show parts included with the DFC for the Celestron C8.  They are (from left to right) the mounting collar, replacement knob, coupler and DFC body including sleeve, counter and knob.

 


What is a Digital Focus Counter?

The Digital Focus Counter is a low-cost mechanical alternative to the electronic DRO.  The three-digit counter display allows 10 turns of the shaft before returning to zero.  If you want focusing repeatability with an NGF focuser, SCT (Schmidt-Cassegrain Telescope) manual focus or MOTOFOCUS, this unit will do the job.  It is available for all NGF focusers (both manual and motorized versions), as a manual unit which replaces the focus knob on 8" or larger SCTs (not recommended for CCD imaging due to space limitations and problems with image shift) and as a piggy-back option for most MOTOFOCUS units.  (The piggy-back option is available only at the time of purchase of a new MOTOFOCUS unit and cannot be added later.)


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