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ZWO ASI174MM Mini Monochrome CMOS Astrophotography Guide Camera


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  • Great for Planetary Imaging and Guiding! 
  • Pixel Array: 1936 x 1216.
  • Pixel Size: 5.86 microns.
  • Read Noise: 3.5e.
  • Peak QE: 77%.

Product Details

  • The ASI174MM Mini is a top-notch monochrome guide camera, well suited for both planetary astrophotography 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 of 77%, a read noise of only 3.5e, a pixel array of 1936 x 1216, and a pixel size of only 5.86 microns, 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 ASI174MM Mini Specifications at a Glance


    ASI174 Mini Specs

    Capture the Stars with Dynamic Features of the ASI174 Mini

    Powerful Astrophotography Performance

    Engineered with high sensitivity, precise guiding, and apeak value at 77%, the ASI174 Mini has an incredible light-gathering ability helping you produce breathtaking images! 

    USB 2.0 Port & ST4 Port

    This 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 via its ST4 port providing convenience and versatility!

  • specifications

    ADC12 bit
    Back Focus8.5 mm
    Camera ConnectionM28.5x0.6 / Type C mount
    Color or MonoMonochrome
    Dynamic Range12 Stops
    Free ShippingYes
    Full Rez Frame Rate128fps
    Full Well32.4ke
    Max Frame Rate740fps
    Mega Pixels2.4 mp
    Peak QE78%
    Pixel Array1936 x 1216
    Pixel Size5.86 microns
    QE Peak77%
    Read Noise3.5e
    Sensor Diagonal13.4 mm
    Sensor TypeCMOS
    Warranty2 Year Warranty
    Weight0.9 lbs
  • included items


Product Reviews

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Vik S.
United States United States

Excellent guide camera

The ZWO ASI184MM has 2 properties that make it highly desirable as a guide camera - a very large sensor and very sensitive response to faint stars. It is a 16-bit monochrome sensor and I got it to work with the Celestron OAG. The camera comes with some extension tubes attached but for the OAG, I really need to add some additional extension tubes.

United States United States

Best guide camera on the market!

So precise, the larger sensor makes guiding a dream!

Enrique B.
United States United States

Working well

I added this camera to my guide cameras collection. I needed bigger chip size and bigger pixels for my SCT FL 2032 ml. The Zwo 120 and 290 work better for short focal length. So far the camera has work well. I don’t expect less for the price.

Jihong C.
United States United States

one of the best for OAG and planetary imaging

never failed getting a guide star. superb imaging for Jupiter and Saturn on my C8 SCT

Dave W.
United States United States

Great Guide Camera for Long Focal Lengths

At 2030mm I was able to find guide stars. I was in a hurry, so I didn't take the time tweak the settings. I did create a dark library, though. I only cranked the gain and binned 2x2 in PHD software. It got me through the night. The only issue was with the ZWO OAG, not the camera. The camera has a very wide FOV, but the prism on the OAG, not so much. With the ZWO OAG you get a small circle to locate your guide stars. But thanks to the sensitivity of the camera, you find guide stars easily.