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Model 'Sirius' Telescope Drive

12.0" Clock drive
Manufacturered to AGMA Standard 15.

Diameter:12.0 inches
Diametrical Pitch (D.P.):32
Number of Teeth:383
Suggested Telescope Axis:RA
Worm rotation rate:0.27 RPM
yields sideral rate
Motor input shaft rate:1 RPM, other ratios available. Contact Optic-Craft for more information
$1,305.00
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.
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 Sirius from the Photo Gallery
Model 7 head assembly with hydraulic wedge for 12.5" f/8 Newtonian telescope. Driven by 12" R.A. and 9" Declination drives. Model 5 head assembly with wedge and 12.0" RA drive for Celestron C-14. IMAX motion picture camera used to take images of Halley's Comet. 12 inch RA drive on Alvin Clark 12 inch refractor at University of Pittsburgh. For 14.25" SCT. Fork and 3.0" shafts. Includes 12" RA and 6.6" Declination drives.