FLI Atlas Digital Focuser for Heavy Payloads

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  • Regular price $1,995.00

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FLI Atlas Digital Focuser for Heavy Payloads

FLI Atlas Digital Focuser

  • Achieve critical focus with heavy payloads (up to 25-pounds) with the FLI Atlas Digital Focuser!
  • High TPI precision adjustment screws translate into high positional accuracy.
  • Miniature 105,000-step motor driven by micro-stepping controller with a resolution of 150 nm per step!
  • FLI Atlas Digital Focuser includes Zero Tilt Adapter for no compromises in shift, tilt, or movement.


Today's sophisticated imaging systems include color filter wheels (asymmetrical weight distribution), off-axis guiders, rotators, corrective optics, and CCD cameras. Together they present a formidable group of equipment that must be moved with micron accuracy and no image shift to achieve the finest results. The FLI Atlas Digital Focuser is up to the task; an engineering marvel with unique solutions to achieving critical focus with heavy loads.


  • Minimum Travel 0.35”
  • Dimensions 7.0” x 7.0”
  • Thickness in Closed Position (Factory Set) 1.26”
  • Weight 3.0 lbs
  • PC Interface USB 2.0
  • Number of Steps 105,000
  • Resolution per Step 0.083 micron
  • Clear Aperture 89 mm
  • Maximum Payload 25.0 lbs
  • Payload at 6" Distance 10.0 lbs
  • Note: Do not overload the Atlas Focuser. Doing so may cause permanent damage to your Atlas Focuser or other equipment.


FLI Atlas Digital Focuser Features

  • High TPI precision adjustment screws translate into high positional accuracy
  • Miniature stepper motor driven by micro-stepping controller
  • Adjustment screws supported by high-load-rated bearings extend operational life in the most demanding conditions
  • Linear bearings provide torsional rigidity
  • Symmetrical distribution of redundant mechanical components guarantees consistent performance in any orientation
  • Included FLI Zero Tilt Adapter ensures that system performance is not compromised by tilt, movement, or shifting
  • All mechanical components are enclosed and protected from the environment
  • Hidden drive motor (fully enclosed inside of Atlas Digital Focuser)