Starlight Instruments Posi Drive Motor System
Best precision focusing upgrade for dedicated astrophotography enthusiasts.
This high-torque motor system provides precise, repeatable electronic focusing for heavy imaging setups. With options for standard or high-resolution gearing, it integrates seamlessly with existing focusers while maintaining the ability to manually adjust focus when needed.
$530.00
at
Cloudbreakoptics
Who it's for
- Astrophotographers requiring pinpoint accuracy for deep-sky imaging
- Serious observers who demand immediate and precise mechanical response
- Users with complex imaging rigs and heavy equipment setups
Who should skip it
- Budget-conscious hobbyists looking for an entry-level focusing solution
- Beginners who prefer simple plug-and-play telescope accessories
- Astronomers who frequently switch between different telescope brands
Performance breakdown
Payload Capacity
Handles massive imaging trains without breaking a sweat.
Focus Precision
High-resolution gearing delivers microscopic adjustments for perfect star sharpness.
Thermal Stability
Integrated thermistor keeps focus locked despite shifting nighttime temperatures.
Mechanical Reliability
Zero-slip design ensures consistent performance during long-exposure sessions.
Manual Control
Coarse focus knob offers intuitive tactile feedback when needed.
System Integration
Seamlessly upgrades Feather Touch focusers for a streamlined astrophotography rig.
Key Specs
Weight Capacity
25.4 kg
Resolution
2.3 microns per step
Steps per Inch
11,400
Weight
1.36 kg
Dimensions
152.4 x 152.4 x 254 mm
Standard Resolution
2.2 microns per step
High Resolution
0.25 microns per step
Temperature Compensation
Built-in thermistor
Know before you buy
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