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ZWO ASI120MM Mini Monochrome CMOS Camera


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  • Its Powerful Performance Makes it Great for Guiding!
  • Peak QE of Over 75%!
  • Pixel Array: 1280 x 960.
  • Pixel Size: 3.75 microns.
  • Read Noise: 3.5e.

Product Details

  • The ZWO ASI120MM Mini is a top-notch monochrome guide camera, well-suited for both planetary imaging and acting as a guider to amplify the usefulness of other astronomy instruments. Despite being qualified as a 'miniature' camera, it still operates at a high level of performance; with a peak QE over 75%, a typical read noise of only 4.0e, a pixel array of 1280 x 960, and a pixel size of only 3.75 micrometers, it qualifies as a powerhouse despite its small size. It achieves all of this while presenting a small and slender profile, taking up a minimum of space in your imaging train. The interface for this camera is a Type C USB 2.0 port, similar to that found in several mobile phone types.

    The ZWO ASI120 Mini Specifications at a Glance

    Capture Deep-Sky and Planetary Images with the Features of the ZWO ASI120 Mini 

    Powerful Astrophotography Performance

    Engineered with high sensitivity, precise guiding, and a peak value at over 75%, the ASI120 Mini has an incredible light-gathering ability helping you produce breathtaking images!

    Accessible Mechanics

    This ZWO Mini camera has one USB 2.0 type C port which is very popular among mobile phones. It can also connect to the auto guide port of a mount providing convenience and versatility!


  • specifications

    ADC12 bit
    Back Focus8.5 mm
    Camera Connection1.25" Nosepiece & M28.5x0.6
    Color or MonoMonochrome
    Delta TC
    Dynamic Range11.2 Stops
    Free ShippingYes
    Full Rez Frame Rate35fps
    Full Well14.5ke
    Max Frame Rate224fps
    Mega Pixels1.2 mp
    Peak QE75%
    Pixel Array1280 x 960
    Pixel Size3.75 microns
    Read Noise6.4e
    Sensor Diagonal6 mm
    Sensor TypeCMOS
    SensorOn Semi AR0130CS
    Weight0.992 lbs
  • included items

Product Reviews

Customer Reviews
4.6 Based on 25 Reviews
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Dale K.
United States United States
Great little guide camera!

Just started getting into astrophotography and decided to get this guide camera for my Sky-Watcher Star Adventurer 2i tracker. Wasn't too familiar with autoguiding but watched enough YouTube videos to get the gist and the first night got me great results! I used to have a lot of oblong stars, even when I thought my polar alignment was good but now I get very circular stars. Low cost but performs very well! Highly recommended as an entry level guide camera.

A OPT Telescopes Customer
Victor R.
United States United States
Satisfied customer

Easy to install and configure. Long learning curve for guiding.

George K.
United States United States

Works like a charm in PHD2 with APT

United States United States

Good, much as expected!

James C.
United States United States
My ZWO ASI120MM Mini is working great

My ZWO ASI120MM Mini is working great. I have it on my Celestron 8" Newtonian and connected "on camera" to the AVX mount. I'm using it as a guide camera and, so far, it's working great! The setup was easy and after I figured out how to use it with PHD2, things went smoothly.

Adit T.
Indonesia Indonesia
My First CMOS Camera

This is my first ever purchase of a CMOS camera, and i have been having such a blast. Easy to use, and such a handy equipment to have for Guiding Camera. The guys here at OPT corp has been very helpful guiding all my journey towards Astrophotography. Much recommended!