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FLI's digital focusers are specifically designed for modern CCD imaging where the digital imaging system is mounted very close to correct focus. The thin designs allow focusing with short-travel optical designs.

All of FLI's focusers are ASCOM compliant.


  • Maximum Payload: 25lbs
  • Payload at 6" Distance: 10lbs
  • Minimum Travel: 0.35"
  • Number of Steps: 105,000
  • Resolution per Step: 85 nm/step
  • Weight: 3lbs
  • PC Interface: USB 2.0
  • Mechanical Interface: Zero-Tilt Adapter
  • Compatibility: ASCOM Compatible, Auto-Focus Capable