Focus accurate and fast your Celestron SCT telescope using our powerful motor focus kit SCT. This high resolution geared box has a 0,06 degree step size can can easily lift more than 6 Kg (per cm). Its high torque is suitable for lifting heavy imaging equipment. Moreover, motor’s gearbox has a very low backlash which can easily tuned using backlash compensation in imaging software.
Pulley and Belt design allows the motor to stay away from your filter wheel (and not collide with it) when you use a focal reducer. Its sophisticated bracket design can fit to most of Celestron SCTs
Note: You will need a stepper controller to drive the motor. Check our Dual Motor Focus Controller
A special shaped black anodised aluminium bracket, hard to bend, can be attached to most of the Celestron SCT telescopes. We have successfully installed it on:
- Celestron EdgeHD 8, 9.25 , 11, 14 (13mm bore)
- Celestron SCT C6, C8, C925, C11, C14 (22mm bore)
- Celestron RASA 8 (13mm bore)
- Celestron RASA 14” (22mm bore)
In the box
- High resolution geared stepper motor (Step Angle 7.5, Deg 120, Gear Ration 1:120). Its gearbox has very low backlash and high torque suitable to focus in micron scale.
- Black Aluminium Anodised Bracket for Celestron SCT Telescopes
- Timing Belt
- 13 mm Pulley 2GT (6”,8”,9.25”) or 22mm Pulley 2GT (11” ,14” Celestron)
- Bolts
Technical Specifications
| Step Angle (Deg) | 7.5 / 120 = 0.0625 |
| Gear Ratio | 1:120 |
| Phases | 4 (Unipolar Motor) |
| Voltage | 12V DC |
| Current (A) | 0.27 |
| Pull-in Rate (PPS) | 400 |
| Pull-in Torque (N.cm) | 60 (100pps) |
| Weight | Stepper Motor, SCT Adapter & Motor Pulley / Belt weight in total 300g |
Documentation
Motor Focus Kit for SCT installation guide
Following images are from the older plastic enclosure but it helps to understand how the SCT enclosure is attached on the telescope
 |
 |
 |
 |
