ZWO ASI120MM-MINI 1.2 MP CMOS Monochrome Astronomy Camera with USB 2.0 # ASI120MM-MINI

Our Price: $149.00
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Manufacturer SKU: ASI120MM-MINI
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ZWO ASI120MM-MINI 1.2 MP CMOS Monochrome Astronomy Camera with USB 2.0 # ASI120MM-MINI

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Quick Overview

  • Compact and highly sensitive monochrome guide camera with 1.2-megapixel 1280x960 sensor
  • Small 3.75-micron pixels allows tight tracking of faint guide stars
  • Also serves as a good planetary imaging camera
  • USB2.0 Type C interface and ST4 autoguiding port
  • Ready to go out of the box with cables, adapters, and manual; Software and drivers available from manufacturer's website
  • Weighs 60g (2.1oz)

Product Details

ZWO’s ASI120MM-Mini monochrome camera is perfect for autoguiding or planetary imaging. The ASI120MM-Mini uses a 1.2-megapixel monochrome sensor with a peak QE of 75% and low read noise to give an excellent level of performance despite its compact size. The camera also includes an AR-coated window to maximize light transmission and protect the CMOS sensor.

The affordable ASI120MM-Mini incorporates a 1/3” sensor (4.8mmx3.6mm) with 1280x960 resolution and small 3.75-micron pixels. The small pixel size results in more precise guiding because the camera can detect smaller deviations in guide star position during an exposure. With a high QE and low read noise, the ASI120MM-Mini can detect plenty of potential guide stars in the field of view of a small guide scope.

The ASI120MM-Mini weighs just 2.1oz and has a diameter of 36mm, so it’s far more compact than the ZWO ASI120MM-S. The main body of the camera slips into a 1.25” focuser and includes a M28.5X0.6 female thread for 1.25" astronomy filters. The camera uses a small Type-C USB2.0 interface, the same type of connector used by many cell phones, and 12-bit ADC for good data resolution. Its ST4 port enables direct connection to the autoguiding port on the telescope mount.

The camera comes with instructions to help you download the required control software and drivers directly from the ZWO website.


  • Sensor: 1/3″ CMOS AR0130CS (Monochrome)
  • Resolution: 1.2Mega Pixels 1280×960
  • Pixel Size: 3.75µm
  • Exposure Range: 64µs-1000s
  • ROI: Supported
  • ST4 Guider Port: Yes
  • Focus Distance to Sensor: 8.5mm
  • Shutter Type: Rolling Shutter
  • Protect window: AR coated window
  • Operating System Compatibility: Mac, Windows, Linux
  • Interface: USB2.0
  • Bit rate: 12bit output (12bit ADC)
  • Adaptor:1.25″ / M28.5X0.6
  • Dimension: φ36mm X 61mm
  • Weight: 60g or 2.1 ounces (without lens)
  • Working Temperature: -5°C—45°C
  • Storage Temperature: -20°C—60°C
  • Working Relative Humidity: 20%—80%
  • Storage Relative Humidity: 20%—95%

Supported resolution

Binning 1×1:

  • 1280X960@35FPS
  • 1280X720@46FPS
  • 1024X768@54FPS
  • 800X600@90FPS
  • 640X480@118FPS
  • 320X240@224FPS

Binning 2×2:

  • 640X480@35FPS

More resolutions can be user defined

What's in the Box

  • Camera Body
  • Quick Guide
  • 1.25" Cover
  • 0.5m USB 2.0 Type-C Cable
  • 2m USB 2.0 Type-C Cable
  • ST4 Cable
  • M28.5-CS Adapter
  • 1.25" Extender