Optec TCF-Si Focuser
Best precision focuser for amateur astronomers seeking reliable, manual telescope control.
This electronic focuser brings precision and automation to your imaging train, removing the guesswork from achieving perfect focus. It is a reliable solution for photographers looking to maintain sharp images throughout long, unattended capture sessions.
$725.00
More TCF-LSI options
Who it's for
- Astrophotographers needing razor-sharp focus for high-magnification imaging
- Long-exposure imagers requiring consistent focus throughout temperature shifts
- Serious observers using heavy, complex camera and accessory setups
Who should skip it
- Budget-conscious hobbyists using entry-level telescope equipment
- Users with limited back focus or strict weight constraints
- Automation enthusiasts preferring open-source or universal control software
Performance breakdown
Build durability
Rugged aluminum housing withstands the rigors of frequent field use.
Integration ease
Standardized design ensures a smooth, hassle-free connection to most telescope setups.
Power efficiency
Reliable 12V DC operation keeps power consumption steady during long sessions.
Operational simplicity
Manual controls offer intuitive, tactile adjustments for precise focus tuning.
Versatility
Adapts easily to various imaging trains without requiring complex modifications.
Warranty support
Standard one-year coverage provides essential protection for your initial investment.
Key Specs
Clear Aperture
3.0 inches
Barrel Diameter
3.0 inches
Back Focus Usage
3.8 to 4.8 inches
Step Resolution
2.5 microns per step
Payload Capacity
22 lbs
Weight
7.0 lbs
Power Source
12V DC
Power Consumption
< 1A
Connectivity
Serial
Mount Interface
OPTEC-4300
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