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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 29 Reviews
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United States United States
Using with Star Adventurer for Guiding

The ZWO ASI120MM Mini the the 30mm f/4 Mini Guide Scope works awesome for help with guiding the Star Adventurer to keep the stars from trailing with a longer focal length lens. Shipping was quick and packaged very well. No regrets purchasing from OPT.

OPT Telescopes ZWO ASI120MM Mini Monochrome CMOS Camera Review
Robert D.
United States United States
Awesome camera

Excellent sensitivity. Easy to use.

OPT Telescopes ZWO ASI120MM Mini Monochrome CMOS Camera Review
Gary A.
United States United States
OPT was super fast to get this shipped out.

The ZWO cam works good so far. I need to get it working with PHD2 first with out it having RA drift issues.

Dave M.
United States United States
Nice guide camera!

As usual, opt delivered the goods swiftly, and at no cost to me. I love the product and their service.

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.