ZWO AM7 Harmonic Equatorial Mount
The
telescope mount that grows with you, precision that keeps you exploring

Why Choose the AM7 Harmonic
Equatorial Mount?
1.
High
capacity, two ways
Carries
up to 20 kg with no counterweight. Up to 30 kg with a counterweight.
2.
Precision
you can verify
Periodic error is
controlled within plus or minus 10 arcseconds, and every mount includes its own
measured PE test report.
3.
Cleaner
setup, less mess
Built
in USB C and DC power ports on the dovetail saddle help keep cables organized.
4.
Two
modes, one mount
Equatorial
mode for tracking and imaging. Alt-azimuth mode for visual observing.
5.
Works
anywhere on Earth
Zero
to 90 degrees altitude range means it can be used at any latitude worldwide.
6.
Control
the way you like
Bluetooth, Wi Fi,
or the included hand controller.
7.
Ready
for cold nights
Rated down to minus
20 C.
8.
A
control system built for reliability
ZWO’s in house
control system is designed for stable, dependable operation.
9.
Portable
by design
Despite its
capacity, the mount weighs about 6.5 kg.
10.
Backed
by support and a global community
ZWO
mounts are widely used by astrophotographers worldwide, with a strong user
community and support network.


AM7, More Capacity. More
Precision.
The
AM7 is ZWO's highest-capacity harmonic drive telescope mount. It is built with
heavier imaging rigs in mind, such as telescopes with long focal lengths, where
tracking accuracy matters most.

Load
Capacity
The
AM7 supports up to 20 kg without counterweights, and up to 30 kg with
counterweights installed. That gives you room to run a serious setup now and
still scale up later.
Tracking
and GoTo
The
goal is simple. Solid tracking and reliable GoTo under real payload, so you
spend less time managing limits and more time imaging and exploring the night
sky.
A
Mount for the Long Haul
The
AM7 handles both small and heavy setups, so you can grow into bigger telescopes
without outgrowing your mount.
*Weights are manually
measured and may vary slightly.
Professional
Grade Precision With a Custom Harmonic Drive Mount
Built out of years of ZWO
development and tuned for astrophotography, the AM7's custom harmonic drive is
designed for smooth, stable tracking with strong torque and consistent
performance.
Every AM7 is individually
tested before it ships. You get a unique periodic error curve report for your
mount, so you can see the measured tracking performance of the exact unit you
own.
Key specs and testing
Custom harmonic drive system
Total harmonic gear reduction
ratio 300 to 1
Individual periodic error test
report included
Periodic error controlled
within plus or minus 10 arcseconds for dependable high precision tracking.
(That's the thickness of a human hair viewed from about 20 meters away).


Clean Cables.
Less Mess. Fast Setup.
A lot of telescope setups end
up as a tangle of wires and extra adapters. The AM7 is built to keep things
cleaner and simpler.
With built in USB-C and power
ports on the mount, you can run power and data where you need it without cables
hanging everywhere. Even if you have a custom rig with a camera, focuser, guide
gear, and other accessories, the AM7 helps reduce clutter so you can set up
faster and spend more time imaging the night sky.

Cable
Management Made Simple Integrated
USB C and DC Power Ports
At
only 6.75 kg, the AM7 is designed to be easy to carry and quick to set up. The
built in dovetail plate includes a USB C port and DC power outlets, so you can
route power and data through the mount instead of running a mess of cables
around it. The result is cleaner cable routing and far less of the usual cable
spider web.
For
mount adjustments when needed, the AM7 also includes a magnetic hex wrench that
stores directly on the mount body, so it stays close at hand and does not get
lost in the dark.

Dual Mode
Operation
One Mount for
Viewing and Imaging
The
AM7 supports two modes so you can use the same mount for casual observing or
serious imaging. Switching modes is done with a quick hardware change to the
mount's position, then you select the mode on the hand controller.

Equatorial
Mode
Best
for accurate sky tracking for imaging and longer sessions.
Alt
Azimuth Mode
Best
for visual observing with quick setup and simple pointing.
Mode
Indicator Lights
Red
means Equatorial Mode
Green
means Alt Azimuth Mode

AM7
supports a full 0 to 90 degree altitude adjustment range, so it can be aligned
and used almost anywhere on Earth, from the equator to the poles. That makes it
a practical choice for travel or a permanent setup, no matter where you
observe.

How
the two stage adjustment works
Stage
one adjustment range
Use the altitude
adjustment knob for 0 to 60 degrees.
Stage
two adjustment range
Move the hex screw
to the second position to enable 30 to 90 degrees.

User-friendly
Design
Portable
Control, Refined Wi-Fi
and Bluetooth Connectivity
AM7
gives you two simple ways to connect, Wi-Fi and Bluetooth, so control is always
straightforward.
Bluetooth
makes quick sessions easier. Open your phone, connect directly, and control the
mount without a hand controller. No need to switch your device over to the
mount’s Wi Fi network just to get running.
What is new in
the latest version
Bluetooth
control
You
can turn Bluetooth on or off by holding the BT button for 10 seconds. The
setting is saved, even after power off.
A
cleaner indicator light
A
new light guide column softens the LEDs, so the status lights are easier on
your eyes at night and won't interfere with your camera's either.

AM7 Smart Hand
Controller
More Than a
Controller
AM7 includes a joystick style hand controller
designed for comfortable, and intuitive control. It is also a built in
connection hub for the mount. With its integrated Wi-Fi hotspot, you can
control the mount wirelessly, manage settings
through
a simple web interface, and perform firmware updates for both the hand
controller and the mount. This is the main path for keeping the system current.
Bluetooth
When You Want It
Off
When You Need It
Bluetooth
control is a convenient option for direct smartphone control in the field. But
some environments need tighter wireless control, like remote observatories or
permanent installations where interference or policy requirements matter. For
those cases, AM7 lets you easily disable Bluetooth when needed, then enable it
again when it makes sense.
Hollow-knob ergonomic design
The dovetail plate tension knob and azimuth fine-tuning knob feature a
hollow structure. When manual rotation is limited, you can insert a hex wrench
to gain extra leverage, making adjustments easier and more reliable with less
effort.

Smart Control,
Easy Operation
Sky Atlas Mobile
App for iOS and Android
The
AM7 can be controlled wirelessly using the Sky Atlas app on iOS and Android.
You get a live star map, simple object search, and quick tools like Tonight’s
Best, target GoTo, and precise pointing to the objects you want to observe or
image.
Works
Smoothly With ASIAIR in Station Mode
AM7
also supports station mode, which makes it easy to integrate with a controller
like ASIAIR. With the hand controller providing Wi-Fi, ASIAIR can connect to
the mount over the network, so you can run a clean setup without a direct
control cable between the AIR and the mount.

Seamless
Integration With ASIAIR
ASIAIR
can connect to and control the AM7 using either wireless or wired connections,
so it fits cleanly into a wide range of setups.
Because
AM7 and ASIAIR are part of the same ecosystem, it takes the guesswork out of
driver support and compatibility. You are not stitching together software from
different vendors and hoping everything plays nicely. And as ASIAIR software
continues to evolve with new features, you can count on AM7 support to keep
pace, with new mount capabilities integrated directly within the same system.




The payload capacity of the AM7 equatorial mount is
derived from simulation calculations as shown in the figure above:
1. Maximum payload without counterweight: 20 kg (corresponding
to a maximum output torque of 40 N·m).
2. It is recommended to use a counterweight ≤ 10 kg.
When using a 10 kg counterweight, please install it with a moment arm between 20
cm and 30 cm.
For other counterweight masses, the allowable
installation position can be calculated as follows:
Assuming the counterweight mass is m kg, the allowable
moment arm length L must satisfy:
20 N·m ≤ m * g * L ≤ 30 N·m
Where g = 9.8 m/s² (can be approximated as 10 m/s² for
calculation).
For
example, with a 5 kg counterweight: L ranges from 20 N·m / (5 × 10 m/s²) = 0.4
m to 30 N·m / (5 × 10 m/s²) = 0.6 m.

