ZWO AM5N Harmonic Equatorial Mount — image 1
ZWO

ZWO AM5N Harmonic Equatorial Mount

The strain-wave (harmonic) mount most astrophotographers should buy. Its gears are strong enough to hold a ~15 kg imaging rig with no counterweight, so there's no heavy balance bar to haul or balance, in a 5 kg head you carry in one hand. The 2024 'N' revision tightens tracking and adds a proper autoguide port over the original AM5.

91/ 100
Polaris Score
Performance · ease · portability · upgrade path
See the breakdown ↓
GoTo
Yes
Head Weight
5.0 kg
Imaging Payload
15 kg
Mount Type
Harmonic (strain wave)
Payload Capacity
15 kg
Tracking
Yes
From$2,299

Lowest in 90 daysLowest ever tracked

Price tracked by PolarisObserved 55 timesTracking since Jun 2026

Where to buy

Verified 9h ago · prices tracked daily

01What it's good at

What it's best at — and the trade-offs.

Holds ~15 kg (33 lb) of scope and gear with zero counterweight, its harmonic gears are strong enough that there's no balance bar to haul into the field or…
Best at
✓Holds ~15 kg (33 lb) of scope and gear with zero counterweight, its harmonic gears are strong enough that there's no balance bar to haul into the field or fiddle with
✓5 kg head sets up in seconds: drop it on a tripod, rough polar align, and you're imaging, none of the balancing ritual a normal equatorial mount demands
✓Plugs straight into a modern imaging setup: native ASIAIR control, plate-solving, and USB + ST4 autoguide ports for tight, long-exposure tracking
Trade-offs
!Loads past ~15 kg need the optional counterweight after all, but that covers most refractors and small SCTs with room to spare
!Like all harmonic mounts it has slightly more 'periodic error' (a tiny repeating tracking wobble) than a premium worm-gear mount, autoguiding cancels it, so it's a non-issue in practice
!It's an imaging mount, unnecessary if you only want to look through an eyepiece
02In plain English

The numbers, in plain English.

15kg payload
Payload
15 kg, no counterweight
Fifteen kilograms with no counterweight covers a 130 mm apochromat, an 8 inch astrograph or a small SCT with a full imaging train. It is the capacity most amateurs will never outgrow, in a head one person carries.
Head weight
5.0 kg
Eleven pounds carrying fifteen kilograms is the reason this mount reset expectations. An equivalent German equatorial head weighs three times as much before counterweights.
Drive type
Harmonic (strain wave)
Strain-wave gearing holds an unbalanced load, which is what eliminates counterweights and shortens setup to a few minutes. It also produces higher-frequency periodic error, so autoguiding is part of the design rather than a remedy.
Modes
Equatorial or alt-azimuth
Equatorial mode for long-exposure imaging, alt-azimuth for quick visual nights with no polar alignment. One mount that suits both how you image and how you observe casually.
Tripod requirement
Rigid tripod essential
The load sits entirely on one side, so tripod flex translates directly into guiding error. Pair it with the matching heavy tripod or a pier rather than a photo tripod.
03The Polaris Score

How it scores, and why.

91/100
91/ 100
ZWO AM5N Harmonic Equatorial Mount

Near-top marks for performance and ease relative to weight; portability and upgrade sit just under because the heaviest loads still want a counterweight.

Performance
90
Ease of use
90
Portability
95
Upgrade potential
85

Polaris weighs tracking and payload capability, how easy the mount is to live with, how portable it is, and how far it takes you before you outgrow it — not list price or brand.

04Who it's for

An honest fit check.

Deep-sky astrophotographers who want one grab-and-go mount that still carries a real…
Buy it if you
✓Deep-sky astrophotographers who want one grab-and-go mount that still carries a real payload, the default pick for most amateurs
✓Anyone tired of counterweights and balancing on a German equatorial mount
✓Star-tracker or small-mount owners ready to run a full imaging rig
Look elsewhere if you
!Observatory rigs with heavy SCTs or big astrographs, look at the Pegasus NYX-101 or a large German equatorial
!Budget-first visual observers who don't need GoTo or tracking at all
05The numbers

Full specifications.

7 measured and stated values
Mount & drive
Payload Capacity15 kg
More
GoToYes
Finds objects from a built-in database and points the mount at them automatically, then tracks.
Head Weight5.0 kg
Imaging Payload15 kg
Mount TypeHarmonic (strain wave)
TrackingYes
A motor turns the mount at the sky’s speed, holding your target still for long exposures. You still aim it yourself.
weight lbs11lbs
Editor’s Take

Harmonic, or strain-wave, is the whole point of this mount. Its gears are strong enough to hold your telescope with no counterweight, so a 5 kg head carries a 15 kg rig and setup is drop-it-on-the-tripod-and-go instead of a balancing ritual. It is still a full GoTo mount, and paired with a ZWO ASIAIR it plate-solves, reading the star field to center your target dead-on. The net is most of the capability of a big observatory mount in something you carry in one hand to a dark site. For a first serious imaging mount, unless you already know you need to lift heavier, this is the one.

— The Skynocular verdict
06Pairings

Pairs well with.

4 scopes we would actually put on this mount

The scopes we’d actually put on this mount — chosen for payload, balance and intended use. Comfortable means room to spare; near the limit still works, with care.

William Optics RedCat 51
Comfortable
William Optics
William Optics RedCat 51

The dream pairing: a featherweight refractor and zero counterweights. The harmonic-mount pitch made real.

Sky-Watcher Evostar 72ED
Comfortable
Sky-Watcher
Sky-Watcher Evostar 72ED

Ideal wide-field imaging, light, fast to balance, easy to guide.

Celestron EdgeHD 8
Comfortable
Celestron
Celestron EdgeHD 8

Comfortable even for imaging, a real 8" of aperture with no counterweight.

Celestron EdgeHD 9.25" Advanced VX Telescope
Near the limit
Celestron
Celestron EdgeHD 9.25" Advanced VX Telescope

Carries the weight, but 2350 mm on a harmonic mount needs disciplined guiding. Superb visually.

The current-generation ZWO flagship in its class; harmonic mounts hold value well and this is a long-lived core for an evolving rig.

Community

Used in these setups.

Real builds from the community that include this product.

Portable Deep-Sky Imager

Featured

A modern strain-wave imaging rig. The ZWO AM5N harmonic mount carries real payload with no counterweight and folds down small, while the Askar FRA400C quintuplet delivers a flat, fast field for nebulae and larger galaxies. Add the ASIAIR and a guide scope and you have a complete, travel-ready astrophotography setup that used to take a carload.

07Learn more

Guides and trusted reviews.

1 link — our guides plus reviewers we rate