ZWO EAF Pro Electronic Automatic Focuser

BH #ZWOEAFPRO • MFR #ZWO EAF PRO
Print
ZWO EAF Pro Electronic Automatic Focuser
Key Features
  • Compatible with Many Imaging OTAs
  • Universal USB-C Interface
  • Micron-Level Precision Focusing
  • Focus Adjustment Knob
This ZWO EAF Pro Electronic Automatic Focuser moves ahead of previous EAF models with USB-C connectivity, ultra precise focusing, support for heavy cameras and accessories, and its own rechargeable battery power supply. With the ability to focus at the micron level, the EAF Pro helps you achieve pinpoint stars and tack-sharp planetary images in your astrophotography sessions. Compatible with a wide range of refractor, Newtonian, Cassegrain, and other optical tube assemblies, the EAF Pro is controlled by a USB-C connection to a computer (or ASIAIR Wi-Fi module) and supports up to 11 pounds including a camera, filter wheel, off-axis guider, and other accessories. Built-in Bluetooth and a new focus adjustment knob further extend the EAF Pro's capabilities.
More Details
In Stock
No Store Display
Free 2-Day Shipping
Protect Your Gear
Add a protection plan from $32.99
Ask an Expert
800-606-6969

ZWO EAF Pro Overview

This ZWO EAF Pro Electronic Automatic Focuser moves ahead of previous EAF models with USB-C connectivity, ultra precise focusing, support for heavy cameras and accessories, and its own rechargeable battery power supply. With the ability to focus at the micron level, the EAF Pro helps you achieve pinpoint stars and tack-sharp planetary images in your astrophotography sessions. Compatible with a wide range of refractor, Newtonian, Cassegrain, and other optical tube assemblies, the EAF Pro is controlled by a USB-C connection to a computer (or ASIAIR Wi-Fi module) and supports up to 11 pounds including a camera, filter wheel, off-axis guider, and other accessories. Built-in Bluetooth and a new focus adjustment knob further extend the EAF Pro's capabilities.

Compatible Telescopes
Select models of the following telescope and focuser brands are compatible with the EAF and additional models will be added.
  • SkyWatcher Astrophotography Reflectors
  • SkyWatcher Black Diamond
  • SkyWatcher Dobsonians
  • SkyWatcher Maksutov-Newtonians
  • SharpStar
  • SkyRover
  • TS Optics
  • Astro Tech
  • Feather Touch

ZWO EAF Pro Specs

Motor
35 mm Stepper Motor, 5760 Steps
Power Supply
5 VDC via USB-C
Load Capacity
11.02 lb / 5 kg
Packaging Info
Package Weight
1.3 lb
Box Dimensions (LxWxH)
7.1 x 6.8 x 2.7"

ZWO EAF Pro Reviews

Sharp Focusing

By Richard
Rated 5 out of 5
Date: 2025-11-11

I Have Always Focused Manually, Using An Ipad To Check Focus. Recently I Started Noticing That The Focus Was Drifting After I Went To Bed. I Decided To Buy The EAF-Pro And Am Not At All Sorry I Did. While It Is A Bit Time-consuming To Use (it Takes 4-5 Minutes To Complete The Process And I Have It Set To Check The Focus Every Hour And After A Meridian Flip) It Is Easily Worth The Time Expenditure When You Consider How Much Data Could Be Lost When Your Scope Loses Focus In The Middle Of The Night. I Give This One 5 Stars.

excellent focuser!

By Jim
Rated 5 out of 5
Date: 2025-10-18

Great accurate focuser with no necessary wires! Just don't forget to turn it off

See any errors on this page?

is ZWO EAF Pro compatible with William Ultra-cat ...

is ZWO EAF Pro compatible with William Ultra-cat 108 telescope?
Asked by: Gordon
The ZWO EAF Pro Electronic Automatic Focuser is not compatible with the William Ultra-cat 108 telescope. The ZWO EAF Pro Electronic Automatic Focuser (BH # ZWOEAFPRO) has a maximum load capacity of 11.02 lbs. The William Optics Ultra-Cat 108 weighs about 17.24 lbs.
Answered by: Rob K
Date published: 2026-04-14
  • y_2026, m_6, d_3, h_11CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_1
  • loc_en_US, sid_1900671, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It