ZWO AM3 Harmonic Drive Mount


AUD Price shown includes GST
GST is removed at checkout for NZ



This item is not currently in stock. You can back order it now or to find out when it will be available call 02 9518 7255 or email

 Need some help? Contact us.

    We don't like being beaten on price.

    Please fill in the details below and we will respond shortly

    Found a better price? Click here and watch us try to beat it.

    Secure, Encrypted Checkout.
    Credit cards not stored.

    Expert, After Sales Support. 
    We fully support our products!

    Minimum 2-Year Warranty. 
    + extended manufacturer warranties.

    Aussie Owned & Stocked. 
    Ships fast from Sydney!

    Same Day Shipping. 
    If you order before 2pm!

    ZWO AM3 Harmonic Drive Mount

    New ZWO AM3 Harmonic Drive Mount

    • Weighs less than 4kg
    • Equatorial Mode & Altazimuth Mode
      Load capacity: 8kg w/o counterweight; 13kg with
    • Hand controller + APP for control
    • Wi-Fi connection. Live star database
    • Lightweight design: No need for counterweight
    • Precision control: Strain wave gear reducer + synchronous belt


    The traditional equatorial telescope mount requires heavy counterweights. It can be very difficult to keep balance in RA and DEC directions, and it’s a hassle for transport and storage, which brings amateur astrophotographers a lot of pain when they are in the field under dark skies taking astro images.

    Some of the strain wave geared drive mounts are relatively simple in functions, insufficient in load capacity, also not very stable in use.

    To solve these issues, ZWO developed the ASI Mount series.

    One of the main features of the AM mount series is that they no longer need counterweight. With a weight of 3.9kg,the ZWO AM3 mount has a large load capacity from 8kg to 13kg.

    While portability is very important, stability is also essential in use. Instead of simply pursuing weight reduction of the mount body itself , ZWO has focused on stability for use under all conditions. The internal structure of the body is optimized with the strain wave gear reducer and synchronous belt, bringing more accurate control and an amazing reduction ratio of 300:1. It is also multi-functional that can be used as both an equatorial mount or an altazimuth mount. You can either control the mount via Wi-Fi and bluetooth, or a hand controller.

    With a ZWO AM series mount, you won’t have to struggle with counterweights.

    Portable and stable


    The internal structure of the body is optimized with the strain wave gear reducer and synchronous belt, bringing more accurate control and an amazing reduction ratio of 300:1.

    Customized Strain Wave Gear

    ZWO developed the special strain wave gear based on the actual needs for astrophotography. It comes with very low periodic error and high torque. Each mount is tested and equipped with an exclusive PE curve before it leaves the factory so that the quality can be guaranteed.

    Tip the scales at just 3.9kg


    8kg-13kg payload

    The load capacity of ZWO AM3 without the counterweight is 8kg, and 13kg with the counterweight.

    * The counterweight should be secured on a counterweight bar of no more than 20cm in length.

    According to the engineering calculations, we can calculate the maximum load capacity of the ZWO AM3 mount:

    8kg without the counterweight

    13kg with the counterweight.

    Supported counterweight:≤5kg

    The counterweight should be secured on a counterweight bar of no more than 25cm in length.

    Equatorial Mode / Alt azimuth Mode

    Can be switched via ASI Mount App or hand controller

    Equatorial Mode: Suitable for tracking and photographing objects

    Altazimuth Mode: Suitable for visual astronomy

    All-round 0°-90° Pitch Angle

    Gear 1: Allow you to adjust the pitch angle grip to achieve a degree between 0 and 60.

    Gear 2: You can loosen the hex-head screw and then adjust the pitch angel grip to achieve a degree between 30 and 90.

    Wireless Control

    Tonight’s Target, GOTO, Live Preview and so many great functions can all be achieved with your phone or tablet.

    Seamless Linkage with ASIAIR

    ASIAIR can control AM5 via a wired or wireless connection. The ASI package provides the best astrophotography experience.


    ZWO AM3 Specifications

    Mount type Equatorial
    Mount mode Equatorial mode / Altazimuth mode
    Drive Strain wave gear + Synchronous belt (Reduction ratio: 300:1
    Periodic error <+/- 20″
    PE duration 288 sec
    Drive RA NEMA 35 stepper motor

    +Model No. 14 (Reduction ratio:  300:1)

    Drive Dec NEMA 35 stepper motor

    +No. 14

    Load capacity 8kg without counterweights

    13kg with counterweights

    Latitude adjustment range 0° – 90°
    Azimuth angle adjustment range  +/- 6°
    Dovetail  Vixen & Losmandy
    Weight 3.9kg
    Interface thread on counterweight shaft M12
    Stepper motor resolution 0.17″
    Max slew speed 6°/sec
    Slew rate 0.5x, 1x, 2x, 4x, 8x, 20x, 60x, 720x, 1440x
    Power port DC 5.5 -2.1  (12v-3A)
    Power consumption 12v / 0.386A (standby),

    12v /0.58A (tracking

    12v /1.7A (Goto)

    Guide Port ST4
    Communications interface USB / WiFI / Bluetooth
    Zero position Mechanical
    Operating temperature -15°C -40°C
    Power failure protection Yes

    Have a question about this product?

      CALL NOW : +61 2 9518 7255 OR EMAIL BELOW

      bintel astronomy experts


      Related Products For Your Consideration …

      Shopping cart0
      There are no products in the cart!
      Continue shopping