ZWO ASI120MM Monochrome Astronomy Camera

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ZWO ASI120MM Monochrome Astronomy Camera
Item # ZWO-ASI120MM
  • Wow, a monochrome USB 2.0 CCD camera that does it all, for way less than you might think!
  • The ZWO ADI120MM Monochrome Astronomy Camera can do planetary and lunar imaging, solar imaging, deep-sky imaging, and act as an all-sky camera with the included 150º wide angle lens attachment!
  • The 1.2MP CMOS sensor on this ZWO camera has an array of 1280 x 960, 3.5um pixels. Peak Quantum Efficiency (QE) is 75%, with no fixed pattern noise.
  • Shoot up to 215 fps at reduced resolution or up to 35 fps at full resolution.
  • The all-aluminum ZWO ASI body has a ST4 autoguider port and comes with a clear window.
  • Package includes USB & Autoguider cables, 1.25" nosepiece, CD with software, drivers, and instruction manual, and the 150º wide angle lens attachment.


When it comes to imaging, do you want to do a little bit of everything? The ZWO ASI120MM Monochrome USB 2.0 CCD Camera can image the moon & planets, it can image the sun with the proper filtration, it comes with a 150º lens for "all sky camera" views, and the ASI120MM is sensitive enough to capture bright deep-sky objects! This camera from ZWO is truly a "do everything" camera, but at way less than the competition!

The ZWO ASI120MM camera uses a 1/3" CMOS MT9M034 sensor, with a pixel array of 1280 x 960 and a pixel size of 3.75 um. Peak QE is 75%, with no fixed pattern noise! A clear window is included that will protect the sensor. A major bonus is the inclusion of a 150º wide angle lens attachment! When connected to the camera, you can do super wide angle shots similar to that produced by an all-sky camera. Capture images of the Milky Way stretched overhead, or record the look of the night sky you experienced on a special vacation. With the ZWO Astronomy Camera, you can do it all!

One of the major features of the ZWO ASI120MM camera is its ability to deliver up to 215 frames per second at reduced resolution, or up to 35 fps at full resolution. The wide range of capture resolution settings available with this camera allows you to go from planetary imaging to deep-sky quickly and easily, without the need for another camera.

The beautiful red housing of the ASI120MM is made of aluminum, and sports a USB and ST4-type auto guider port. 6.5-foot cables for both are included in the box. The 2" interface has M42X0.75 internal threads. A standard M42 to 1.25" nosepiece rounds out the package. The underside of the camera has one 1/4-20 thread in its center, and four M4 threads evenly spaced around the outside edge.

This camera comes with a 2m long USB cable, a 2m long ST4 guider cable, 1.25" clear window, 150º wide angle lens attachment, Driver & Software CD, and a M42-1.25" nosepiece. Software on the CD includes the users manual, Windows camera driver, ASCOM Driver, SharpCap Image Capturing Software, FireCapture Image Capturing software, and Stakkert 2 Stacking Software.

Additional Information

Additional Information

Manufacturer ZWO
Color or B&W? Monochrome (B&W)
Sensor Type CMOS
Series ZWO ASI
Pixel Size < 5 Microns
Warranty 2 Year Warranty
# of Sensors Single Sensor
CCD Class Standard
Quantum Efficiency Peak 75%
Pixel Size in Micrometers 3.5 um
Pixel Array 1280 x 960
Minimum Exposure Time 64us (0.000064s)
Maximum Exposure Time 1000s
Integrated Guider? No
Filter Wheel No
Interface USB 2.0
Operating System Compatibility Windows
Camera Body Dimensions 62mm x 28mm
Camera Weight 100g

Customer Reviews 2 item(s)

Very sensative
After reading up on the ZWO I finally purchased one to use mainly as an Auto guider. I had read that AMD chip computers had issues with this camera, but apparently this issue has been resolved as my Acer AMD X2 ran all the software and camera with no issues. Camera was very sensitive and was recognized by PHD 2. Overall I am very please with the performance of this camera.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by John D / (Posted on 6/1/2015)
Have a ZWO120MC, with which I'm very pleased and, wanted the MM for solar imaging with my Lunt 60 DSPT with which I ordinarily use a DMK41 with good results. The MM has a ton of Newton's rings on H1a images and, they're worse with a Barlow - OK for lunar and planetary though but, this particular one will have to bow to the DMK41. Overall, the ZWO's are great little cameras and, particularly for the price. Wish they made a CCD rather than CMOS for a competitive price.

FireCap 2.3 seemed a little intimidating at first however, it turns out to be great capture software and, I use it routinely with the DMK41 rather than IC Cap. FireCap is rich with options and control which make it superior to others. Kudos to the team that wrote it.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by UCCI / (Posted on 5/1/2014)
Included Items

Included Items

  • 2m long USB cable
  • 2m long ST4 guider cable
  • 1.25" window
  • Driver & Software CD
  • M42-1.25" nosepiece
  • ASI camera body with 1/3" CMOS monochrome sensor
Questions & Answers

Product Questions

Will its software work with Windows 10?
1. Adapter for C-mount camera lens?
2. Will it be able to focus replacing the eyepiece in a Stellarvue F80 finder?
This camera has an autoguider port with ST-4 guider cable for direct connection to the mount. The specs say no integrated autoguider. Does this mean I will need autoguider software on laptop with the program reading the camera and sending control via the single USB cable back through the camera base to the need for direct interface between laptop and mount (i.e., GPUSB)?
I would like to take pictures with a Meade LXD 75 5" refractor of the eclipse this summer. How is this camera for this?
What do I need to connect this camera to a newtonian without any focus issues? I have 40 mm of back focus travel.
Can this camera take solar images, planets & deep space objects such as other galaxies?  Thank You...
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