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Model 'Polaris' Telescope Drive

9.0" Clock drive
Manufacturered to AGMA Standard 15.

Diameter:9.0 inches
Diametrical Pitch (D.P.):32
Number of Teeth:285
Suggested Telescope Axis:RA
Worm rotation rate:0.2 RPM
yields sideral rate
Motor input shaft rate:1 RPM, other ratios available. Contact Optic-Craft for more information
$835.00
Accessories and Options
AC Sync Motor$0
This is the standard motor for all drives.
DC Motor$0
This 12 volt DC motor may be ordered in place of the standard AC motor on any drive at no extra charge. Typical use is on the Declination drive.
DC Motor Control$90
Speed controller for DC motor allows control of RPM to 20x the sideral rate.
Large Worm$170
Heavy Duty worm block assembly for drives 5.6", 6.6" and 9.0" using 1.00" dia. worm and .500" worm shaft.
Setting Circles$86
Only 6" dia. aluminum with black body and white etched number border to fit their axis.
Soft-Tec GOTO System$1635
Soft-Tec full GOTO stepper motor system for both axis; power supply, controller, software, cabling and motors.
Visit their site for more information:
Web Site for Soft-Tec
Stepper Motor$65
Hurst DC stepper motor per axis.
Stepper Motor Controller$290
Hurst EPC-015 stepper controller palm size. Price per axis.
Examples of Polaris from the Photo Gallery
9" Polaris drive shown with Bodine 1/50 H.P. DC variable RPM drive motor.  Hand held control box not shown. D&G Optical 6" f/12 refractor atop Model 1 mount with optional thrust bearings.  Driven by 9.0" RA and 6.6" declination drives.  Custom tripod and cradle extra. Eight inch cassegrain telescope on Model 2 mount with 9.0" RA and 6.6" Declination drives. 9.0 inch RA drive on home-built telescope.  First place winner on mechanical design. Model 4 mount with wedge and two 9" drives for Celestron 8" telescope on customer permanent pier.
Two 9" sideral drives used by NASA to gimbal the "Ion Neutral Mass Spectrometer" for planned mission to the atmospheres of Saturn and Titan. All aluminum assembly for 8" f/12 refractor. 2" shafts, hydraulic wedge and two 9" drives with special cradle. 9.0 inch RA drive assembly with back plate. Model 3 one inch head assembly with 9.0" RA drive.
9.0 inch RA drive on Mathis mounting. Celestron C-8 on Model 2 bushing mount with 9.0" RA drive.