ZWO EAF Electronic Focuser
RecommendedZWO
ZWO EAF Electronic Focuser is a motorized focusing accessory for repeatable autofocus during long imaging sessions.
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Specifications
Mechanical
- Focuser type
- Electronic focuser
- Rated lifting capacity
- 5 kg
Compatibility
- Compatibility
- ZWO-compatible focus brackets for telescope focusers
Electronics
- Controller
- USB / ASIAIR-compatible motor control
Use
- Primary use
- Repeatable electronic focus for imaging automation
Specifications
- Interface
- USB-C
Astrophotography Fit
Best for imaging rigs where focus changes with temperature, filters, or long unattended sequences.
ZWO EAF Electronic Focuser controls focus, which is one of the highest-leverage parts of an imaging rig. Electronic focus makes autofocus after temperature shifts, filter changes, and meridian flips practical.
Check mechanical compatibility, drawtube travel, load capacity, backlash, software support, and available adapters before buying. A focuser that fits poorly can add tilt or slip under camera weight.
Best paired with
- Refractors, SCTs, CDKs, or astrographs with compatible focus hardware
- ASIAIR, NINA, Voyager, FocusLynx, ASCOM, or INDI workflows as supported
- Mono filter-wheel rigs that need filter offsets and repeatable focus
Not recommended for
- Purely visual grab-and-go observing
- Focusers with unsupported brackets, backlash, slip, or insufficient payload
- Users unwilling to calibrate step size, backlash, and temperature behavior
Retailer Rating
Ratings aggregated from public retailer data.
Retailer breakdown
| Retailer | Rating | Reviews | Source |
|---|---|---|---|
| Agena AstroProducts | 4.8 | 40 | Product page |
| Astronomics | 5.0 | 7 | Product page |
| Mile High Astronomy | 5.0 | 1 | Product page |
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Agena AstroProducts Agena AstroProducts | $179.00 | In stock Updated 9/19/2026 | View Offer - $179.00 |
| Astronomics Astronomics | $199.00 | In stock Updated 9/20/2026 | View Offer - $199.00 |
| Cloud Break Optics Cloud Break Optics | $199.00 | In stock Updated 9/20/2026 | View Offer - $199.00 |
| Mile High Astronomy Mile High Astronomy | $199.00 | In stock Updated 9/20/2026 | View Offer - $199.00 |
| Starizona Starizona | $199.00 | In stock Updated 9/20/2026 | View Offer - $199.00 |
| ZWO USA ZWO USA | $199.00 | In stock Updated 9/20/2026 | View Offer - $199.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.