ZWO ASI174MM USB3.0 Monochrome CMOS Camera

In stock...
Add to wishlist

Shipping Calculator

    ZWO’s new ASI174MM camera uses Sony’s latest Pregius IMX174 CMOS sensor. It combines several features putting it high on the list for anyone wanting to capture spectacular lunar and solar images, high resolution planetary images at long focal lengths or even as an autoguider without worrying “will I be able to find a guide star?”


    The main advantages of the Sony IMX174 chip are:

    • Large sensor size of more than 13mm across the diagonal
    • High quantum efficiency of 78% at its peak
    • Very low read noise of only 6e
    • Extremely fast frame rate – effectively freezing moments of steady seeing
    • Global shutter and no fixed pattern noise


    Sony IMX174 Sensor – big benefits

    Prior to the release of the ZWO ASI174 cameras it was difficult to find a good camera capable of full disk images of the Moon or Sun. This is no problem with the ASI174. It’s sensor has a pixel array of 1936 x 1216 with 5.86 µm square pixels. This makes the diagonal measurement of the chip 13.4mm across.


    The Image above shows the comparative field of view between the ASI120 camera and the new ASI174. Shot through a small refractor at 600mm focal length you can see the ASI174 will easily cover 0.5° of sky. It is now very easy to caputre full disk images of the Sun through many popular solar telescopes from Coronado and Lunt – no more mosaics required.


    Back Focus

    After remove T2 11mm ring, back focus length will be only 6.5mm.




    Quantum Efficiency and Read Noise

    Another big benefit of Sony’s IMX174 chip is the high quantum efficiency coupled with very low read noise. This equates directly to better signal to noise. Even with very fast capture rates you will get more signal from your target and less contribution from reading off the sensor of the camera – in essence cleaner data resulting in better images!

    For a few years now Sony’s highly regarded ICX618 CCD chip was a popular choice for planetary cameras. If we compare the new Sony IMX174 sensor to Sony’s ICX618 the news is good for both QE and read noise.

    The quantum efficiency of the IMX174 is slightly more than 11% better with read noise of nearly half! (6e for the IMX174 vs 11e for the ICX618).

    1/1.2″ CMOS IMX174 (mono)
    Pixel Array 1936 x 1216
    Pixel Size 5.86µm
    Exposure Range
    Bit Depth 12 or 10 bit output (12bit ADC)
    ROI Supported
    Interface USB3.0
    Adapter 2″ / 1.25″ / M42X0.75
    Peak QE
    Read Noise
    Well Depth
    Max Frame Rate
    164fps (at full resolution – 10bit)



    Mechanical Drawing ZWO ASI174MM

    ZWO ASI174 Mechanical drawing



    About ZWO Optical

    Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou, China. Known for its iconic ZWO ASI 120MM Monochrome CMOS Camera, the first-ever planetary CMOS camera to beat a CCD in the early 2010s, ZWO has  pioneered new astroimaging technology with revolutionary new features, including USB 3,0, cooled systems, ADC and more. Today, ZWO Cameras is known by every passionate astrophotographer and is available in over 25 countries world-wide. 

    Product Code: ZWO-ASI174MM

    More Information
    Sensor Type IMX174
    Sensor Size 1/1.2″
    Pixel Size 5.86µm
    Resolution 2.3MP (1936×1216)
    Colour / Monochrome Monochrome
    FPS 164 fps
    Back Focus 17.5mm
    USB 3.0/2.0
    Operating System Compatibility Windows, Mac OSX, Linux
    Cooled? No
    Usage Guiding, Planetary Imaging
    Write Your Own Review
    You're reviewing:ZWO ASI174MM USB3.0 Monochrome CMOS Camera