ZWO Electronic Automatic Focuser Operating and maintenance manual

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Electronic Automatic Focuser
Detailed Installation and
Operations Manual
苏州振旺光电有限公司
Suzhou ZWO Co.,Ltd.
Thank you for purchasing the ZWO EAF. This guide will give you a brief introduction to the installation of
your new Electronic Automatic Focuser. Please take the time to read it thoroughly and if you have any
other questions, feel free to contact our support team at [email protected]

EAF Manual
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Catalogue
Electronic Automatic Focuser..........................................................................1
Detailed Installation and Operations Manual ...................................................1
Welcome to Your New Focuser Experience ....................................................3
Product Description .........................................................................................3
EAF Specifications...........................................................................................6
Installation........................................................................................................7
Dimensions......................................................................................................8
Connecting your EAF.......................................................................................9
Software Installation and Configuration .........................................................11
Connecting EAF to your Astronomy Software................................................12
ASIStudio.................................................................................................12
ASIAIR.....................................................................................................13
Sharpcap .................................................................................................17
FireCapture..............................................................................................18
Sequence Generator Pro.........................................................................19
Maxim DL Pro..........................................................................................19
Nebulosity................................................................................................20
The SkyX .................................................................................................20
Manual/Automatical Focus Control................................................................22
ASIStudio.................................................................................................23
ASIAIR.....................................................................................................28
Sequence Generator Pro.........................................................................28
FocusMax ................................................................................................31
Measuring the Focuser Backlash.............................................................36
6 Warranty and Return Policy........................................................................37

EAF Manual
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1. Welcome to Your New Focuser Experience
The EAF is a high quality Electronic Automatic Focuser (EAF)
designed to suit a wide range of Optical Tube Assemblies (OTA). It
is supplied with a versatile mounting bracket system suitable for
flexible installation across a wide range of telescope focuser
systems.
2. Product Description
The ZWO EAF is an all metal bodied electronic focus drive system
designed for installation across a wide range of Optical Tube
Assemblies. The flexible mounting system allows installation
across refractors, Newtonians, Cassegrain and many other
telescope designs. The accessories coming with the box offer a
quick and simple installation using the supplied hardware and
wrenches.
Finished in an attractive red anodised finish, the EAF’s original
design will grace any telescope. The EAF logo uses the Airy spot
as an embellishment to reflect its precise focusing performance.
The EAF utilises a 35mm stepper motor which is subdivided into
5760 steps capable of being accurately positioned at any angle.

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Features (Standard Version)
•High quality metal focuser with anodized finish.
•Precise focus control for planetary and deep sky imaging.
•Can be used in both autofocus and manual modes.
•Flexible installation for use on a variety of refractors,
Newtonians, schmidt cassegrain and other Optical Tube
Assemblies.
•Versatile mounting bracket system with other adapters
available for purchase.
•ASCOM/INDI compatible drivers available for download –
interfaces with many well-known astronomy software
packages.
•ASICAP support built in.
•Native support in ASIAIR.
•Integrated USB interface.
•Powered by USB 2.0 cable.
Features (Advanced Version)

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In addition to the features of the Standard version, the Advanced
version offers:
•Temperature sensor
•Hand controller
Supplied Accessories
1. EAF Body contains the focuser motor and controller.
2. Motor Bracket for attaching the body to the OTA focuser
assembly.
3. Flexible Coupling to attach the focus motor shaft to the OTA
focuser drive shaft.
4. Mounting Hardware –Spacers and screws to mount the
focuser body.
5. M4 and M5 Wrenches for secure the shaft locking screws and
bracket hex screws.
6. USB 2.0 Cable –connection of computers or ASIAIR to the
focus controller.

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3. EAF Specifications
Construction Material
All metal, red anodised finish
Motor Specification
35mm Stepper Motor
Subdivision Steps
5760 steps
Torque
1.5N/M
Focuser Payload Limit
5KG
Power/Data Interface
USB 2.0
Sensor/Hand Controller Interface
3.5mm audio, Centre Positive
The ZWO EAF utilises a USB2.0 interface for data communication
which supports ASCOM and can be used in association with a wide
variety of astronomy software.
Planetary imagers can use ZWO’s ASICAP or other third-party
software packages such as Sharpcap, FireCapture.
Deep sky astrophotographers can enjoy support from ZWO’s
ASIAIR or other well known packages such as Maxim DL, The
SkyX, Sequence Generator Pro, Nebulosity and many more. Third
party focus software such as FocusMax, is also supported.
Your EAF is also fitted with a small multi-function interface that
supports a temperature sensor or external hand controller.
A dedicated temperature sensor can be connected to collect
temperature data and allow focuser control from your chosen
software. The hand controller allows for manual control of focuser
position and focus motor speed.

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4. Installation
Your EAF is supplied with a bracket for connection to a wide variety
of focusers. The standard bracket supports:
SkyWatcher Astrophotography Reflectors, SkyWatcher Black Diam
ond, SkyWatcher Dobsonians, SkyWatcher Maksutov-Newtonians.
TS Optics,
Astro Tech,
Feather Touch,
SharpStar telescopes,
SkyRover telescopes,
Explore Scientific telescopes
……
We recommend you refer to this instruction to confirm whether your
telescopes and focusers are compatible to EAF.
https://www.yuque.com/zwopkb/hardware/eaf-support-list#G2tSm
You can also check the mechanical drawing below to estimate the
compatibility by yourself.
A range of brackets for other telescopes are going to be available
with time. Please keep your eyes on the ZWO site.

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5. Dimensions

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6. Connecting your EAF
Remove the coarse adjustment knob of
the telescope focuser with a suitable
sized wrench.
Install the flexible coupling on the
telescope focuser shaft and tighten the
lock screw.
Attach the bracket to the focuser and
then fix it to the EAF body with the
screws.
Attach the bracket to the focuser and then
fix it to the EAF body with the screws.

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Check whether the installation is robust.
Connect the EAF to the ASIAIR/
computer/cooled camera, hand controller
or the temperature sensor.
For curved focusing seats, such as those on the Sharpstar and the
Feathertouch focusers, you only need use the original locking screws
and 3 spacers to fix the EAF. There are grooves on the bottom of the
EAF connecting plate, and the single screw provides sufficient stability.