ZWO EAF N 5v Electronic Focuser
When will I receive it?
Products marked In stock are dispatched promptly — the exact delivery estimate for your address is shown at checkout, before you confirm the order.
For international shipments, delivery times depend on the destination and are always displayed at checkout before payment.
Products marked Available on order require 5–15 business days for processing. Our team will keep you updated promptly if anything changes.
What are the warranty terms?
Shop with confidence: all our products include a 24-month legal warranty for conformity defects, managed directly by our team.
Many brands also offer extended warranty coverage beyond 24 months — contact us to find out the specific terms for the product you're interested in.
Click here for more information.
Can I return a product?
Yes: you have 14 days from delivery to return any product and receive a full refund — see our Refund Policy for full details.
Items must be returned in their original condition and packaging. Return shipping costs are the customer's responsibility.
Not sure which product is right for you? Contact us before buying — we'll help you find the perfect instrument so you won't need to return anything.
Sei un'azienda? Compila il modulo per la fatturazione
Clicca sul pulsante qui sotto per inserire i tuoi dati aziendali:
Vai al moduloZWO EAF-N – Universal Electronic Focuser with USB-C 5 V
Automate your telescope’s focus with micrometric precision and control it easily via PC or smartphone. Perfect for astrophotography and high-magnification visual observation.
Why choose the ZWO EAF-N?
- Smart autofocus support via ASCOM / INDI drivers and native integration with ZWO ASIAIR.
- Simple power supply: one USB-C 5 V cable for both data and power – ideal for mobile setups.
- Universally compatible with focusers from 4 to 7 mm (Sky-Watcher, William Optics, SharpStar, etc.).
- All-metal body and built-in stepper motor capable of handling up to 5 kg of load.
Technical Specifications
| Parameter | Value |
|---|---|
| Motor | 7.5° stepper with 1 : 128 reduction |
| Max load | 5 kg |
| Power / Data | USB-C 5 V – 0.5 A |
| Dimensions | 41 × 52 × 70.3 mm |
| Weight | 215 g |
Quick Installation
The kit includes mounting bracket, dedicated screws, and 4 flexible couplers (Ø 4 / 5 / 6 / 7 mm) for plug-and-play setup. A specific bracket for Celestron SCT tubes is available as an option.
Ideal for
- Deep-sky astrophotographers who want pinpoint stars in every frame.
- Remote observatories needing focus adjustments after temperature or filter changes.
- Visual observers who want to avoid focus vibrations and imprecision.
FAQ 1 – Which telescopes are compatible?
All focusers with a shaft diameter of 4 to 7 mm: Sky-Watcher, SharpStar, William Optics, Askar, Explore Scientific, Takahashi (with adapter), and Celestron SCT (with optional bracket).
FAQ 2 – Can I control it from my smartphone?
Yes. Connect the EAF-N to ZWO ASIAIR or a mini PC running N.I.N.A or Ekos and control it wirelessly via iOS or Android apps.
FAQ 3 – Is installation difficult?
No, it takes about 15 minutes. Attach the bracket, mount the coupler, connect the USB-C cable and you're ready – no extra power supply needed.