Astronomy Specialist


$299.00 - Sold Out

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The ZWO EAF (Electronic Automatic Focuser) is a precise motor focuser that is essential for planetary and deep-sky astrophotography.

It is ASCOM and INDI compatible, allowing to use it with third party software for the automatic focusing (frame and focus). It can be used in combination with the ASIAIR device and the ASICAP software.

The advanced version includes a temperature sensor and a controller for manual focusing. The sensor is used to calculate the change of temperature of the tube and consequently its focus shrinkage. The hand controller has two speeds and it is particularly useful for visual observations or during the complex focusing procedure in high resolution imaging of planets.

The EAF is compatible with several telescopes:

  • SkyWatcher Black Diamond, Evostar and Quattro (refractors and Newtons)
  • SharpStar
  • TS Optics
  • Astro Tech
  • Feather Touch

With the optional brackets for Takahashi telescopes, the EAF can be installed on more instruments:

  • Takahashi FSQ85
  • Takahashi FSQ106
  • Takahashi TOA-130NFB
  • Takahashi TOA-150B
  • Skywatcher Esprit 100
  • Skywatcher Esprit 120
  • Skywatcher Esprit 150
  • Vixen VC200L
  • Orion ED80T


ZWO EAF connection





59 mm x 52 mm x 41 mm


Stepper motor (5760 steps for revolution)

Power supply

12V DC 5.5 mm x 2.1 mm

Data port

USB 2.0


227 g

Load capacity

5 kg


EAF ZWO specification



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