ASI120MM-S (mono)


ASI120S is a super speed and sensitive USB 3.0 camera. Up to 60FPS under 1280X960 full resolution!

Free World Wide Shipping for cameras and accessories orders above 300 $.
SKU: ASI120MM-S Categories: ,

Product Description

Astrophotography Performance

ASI120S is a super speed and sensitive USB3.0 camera. Up to 60FPS under 1280X960 full resolution! With a peak QE of 75%, beyond ICX618 and with no FPN(Fixed pattern Noise)! Long time exposure supported up to 1000s! Full compatible with USB 2.0 USB Host!

120 Gain RN DR FW vs gainAbsolute QE Curve


What’s in the box?


Mechanical Drawing


Camera technical details

Sensor: 1/3″ CMOS AR0130CS(Color) / MT9M034(mono)
Resolution: 1.2Mega Pixels 1280×960
Pixel Size: 3.75µm
Exposure Range: 64µs-1000s
ROI: Supported
Interface: USB3.0/USB2.0
Bit rate: 12bit output(12bit ADC)
Adaptor: 2″ / 1.25″ / M42X0.75
Dimension: φ62mm X 28mm
Weight: 100g
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:
Binning 2×2:

*Tested under USB3.0 port without overclocking. There is an option to overclock 30% of the current fps

Before first usage of this product read manuals and install correct drivers and software.


  • Fast Shipping(amount ≧ 299USD) for free
  • Fast Shipping(amount < 299USD) : $20.00
  • Free Shipping(amount < 299USD) (Air Mail, 3-4 weeks) (Free)


  1. Fast Shipping: we will choose DHL, UPS, TNT, EMS etc to deliver it. Usually you will get your package in one week. We provide free fast shipping for order ≧ $299 or charge extra $20 for order < $299.
  2. Free Shipping: we will ship via DGM or China Post Registered Air Mail. It usually costs 2-3 weeks to reach US or Europe and costs 3-4 weeks to reach far places.
  3. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  4. Customers from Russia need to provide the name of your company.

Tracking site:


China air mail:


  • The price list on our website is USD without tax.
  • Please note that buyers areliable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free or replace for free if the camera doesn’t work within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis.
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement
  • If you get a faulty camera, please contact us as soon as possible though email: Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.

Do you have uestion, answer or comment? Post here!

  1. :

    Is it possible to use the color camera without the IR-cut window? And can I get the raw image (without color conversion) so I can analyze the raw IR image directly?

  2. (verified owner):

    Is it possible to use a USB 3.0 camera such as ASI120MM-S (mono) with a USB 2.0 active repeater cable? My computer does recognize ASI120MM-S when it is plugged directly into USB 2.0 port, but for some reason fails to recognize the camera when plugged in via USB 2.0 active repeater cable

    • Sam Wen


      yes, our USB3.0 is compatible with USB2.0 host
      and the USB2.0 cable can be longer than USB3.0 one

  3. :

    I am new to the world of Astrophotography. Can this mono camera be used for AutoGuiding a C1100 HD with a 60mm guide scope? Also will work with macOS?

    • Sam Wen


      yes, you can use it as a guide scope under Mac

  4. :

    Great thanks. What software would you recommend?

    • Sam Wen


      there is PHD2 under Mac

  5. :

    Also would this plug into and Autoguide on the new Celestron CGX mount?

  6. :

    What coatings are on the ASI120MM-S mono camera window? It is not mentioned under the ASI120MM-S specifications.

    • Sam Wen


      AR coated window

  7. :

    Does the ASI120MM-S (mono) camera use rolling shutter or global shutter?

    • Sam Wen


      it use rolling shutter

  8. :

    I am interested in using it as a guide camera with celestron’s OAG.

    What is the back focus for this camera?

    I am assuming the M42 will allow it to screw directly onto the guider without nose piece, allowing for a back focus of less than 8mm.

    • Sam Wen


      the back focus is 12.5mm
      you can screw directly onto the guider

  9. :

    We have 12-bit ZWO ASI120MM-S USB3.0 Monochrome camera.
    We want to automate the camera in Labview and collect images in 12 bit (to be converted to 16 bit in Labview environment). As we have only Mono 8 pixel format option available in NI-MAX as shown in the picture below, we are not able to collect images in 12 bit in Labview. How can we collect images in 12 bit in Labview? Or is there any other software that you would recommend for automated image capture?

    • Sam Wen


      you can download the liaview demo from our SDK page, it show you how to display the 16bit image under labview

  10. :

    The FITS files generated by the ASICAP (latest) android app with the ASI120MM-S are not being recognised by ‘FITS Liberator V3.0’ and ‘GIMP 2.8.22’. Please help. The ASICAP app has been installed in Xiaomi Redmi Note 4 (4 GB RAM, 64 GB internal memory) running Android version 7.0 NRD90M and the MIUI Stable (NCFMIEI).

    • Sam Wen


      we will check

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