ZWO EAF ( Electronic Automatic Focuser)


EAF is on backorder, probably will be available around the end of August.


Product Description

EAF ( Electronic Automatic Focuser)


Introducing the new EAF, the latest innovation from the engineers at ZWO. This electronic focuser enables precise, dynamic focus control for planetary and deep-sky imaging.


  1. Highly integrated design
  2. Support ASCOM platform and various ASCOM-compatible third-party software
  3. Support INDI
  4. Support original software such as ASIAIR and ASICAP
  5. Support automatic focusing
  6. Support handle controller and manual focusing
  7. Support temperature sensor
  8. USB HID device and drive-free
  9. Stable and durable


Standard Version: EAF body, flexible coupling, motor bracket, USB2.0 cable.

Advanced Vsrsion: EAF body, flexible coupling, motor bracket, USB2.0 cable, hand controller, temperature sensor.

You could pruchase the standard version first, and then, buy other accessories to upgrade:

temperature sensor

handle controller:


This Hand Controller links to the ZWO EAF (Electronic Automatic Focuser), it shows in every smooth inch of casing with environment friendly APS material. It comes with a 3.5mm female socket. You will be having a comfort grip when you touch its ergonomic design!
ZWO EAF Hand Controller provides an easy method of focusing the telescope, Featuring IN and OUT buttons, a 2-line display, slow and fast speed rate control.
A “must-have” option for EAF user!




Support list:

SkyWatcher Astrophotography Reflectors, SkyWatcher Black Diamond, SkyWatcher Dobsonians, SkyWatcher Maksutov-Newtonians.
SharpStar telescopes,
SkyRover telescopes,
TS Optics,
Astro Tech,
Feather Touch,

More focuser will be supported in the further. such as TAKAHASHI telescopes, GSO telescopes.

Recommend to use extra focuser and EAF on SCT and MCT.







Size: 59mm x 52mm x 41mm

Moter: Step moter, 35mm diameter, 5760 steps to rotate a circle.

Power port: 12V DC 5.5mm x 2.1mm, center positive

Data port: USB2.0 port

Weight: 277g

Capacity: 5kg

Connecting diagram

EAF connection

Mechanical diagram


What’s in the box:


User manual:



We are working on more bracket for focusers on market.

Now, ZWO EAF bracket for Takahashi Scope is available (this part is defined as optional accessories  for ZWO EAF):

Support List:

Takahashi TSA120
Takahashi FS60
Takahashi FSQ85
Takahashi FSQ106
Skywatcher Esprit 100
Skywatcher Esprit 120
Skywatcher Esprit 150
Vixen VC200L
Orion ED80T

Connecting-bracket for Takahashi Scopepacking information


  • Fast Shipping(amount ≧ 299USD) for free
  • Fast Shipping(amount < 299USD) : $20.00
  • Free Shipping(amount < 299USD) (Air Mail, 3-4 weeks) (Free)

If you can’t get the air mail package after 4 weeks, please let us know ASAP:


  1. Fast Shipping: we will choose DHL, UPS, TNT, EMS etc to deliver it. Usually you will get your package in one week. We provide free fast shipping for order ≧ $299 or charge extra $20 for order < $299.
  2. Free Shipping: we will ship via DGM or China Post Registered Air Mail. It usually costs 2-3 weeks to reach US or Europe and costs 3-4 weeks to reach far places.
  3. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  4. Customers from Russia need to provide the name of your company.

Tracking site:


China air mail:


  • The price list on our website is USD without tax.
  • Please note that buyers areliable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis. We do not provide any replacement unless ZWO confirmed the product is DOA (Dead On Arrival).
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement. If we confirm you can get a replacement, goods must be returned with all accessories, instructions, etc and must be suitably packed.
  • If you get a faulty camera, please contact us as soon as possible though email: Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.


Do you have question, answer or comment? Post here!

  1. Avatar


    Support for Explore Scientific ED80 CF date? :)


    • Avatar


      It should support with braket for Takahashi scopebut we are noet sure, if you tested it and have any info, we would very apprecitaed if you send it to us.


  2. Avatar


    Unfortunately, it’s out of stock.
    When are you ready for this?


    • Avatar


      It can be purchased now.


  3. Avatar



    Will the EAF support the Skywatcher SKYMAX 180 ?


    • Avatar


      MCT or SCT need extra focuser.


  4. Avatar


    Can the EAF use the hand control and temperature probe at the same time?


    • Avatar


      Sorry it cannot.



Add new