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ZWO ASI678MC USB 3.0 Color Astronomy Camera


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  • Upgraded planetary, solar and lunar camera
  • Utilizes the Sony IMX678 color sensor
  • Zero amp glow with high dynamic range & very low noise
  • 4k at 47.5fps

Product Details

  • The ZWO ASI678MC utilizes Sony's newest IMX678 color sensor for outstanding planetary, solar, and lunar imaging. This 4K, color in one shot camera boasts high dynamic range and low readout noise, along with a large full well capacity.

    ZWO ASI678MC 4K Color Planetary Camera

    The back-illuminated sensor used in the ASI678MC camera allows for extremely low readout noise and ultra-high sensitivity. It achieves this by moving the structural matrix of wiring from the front of the SMOS sensor to the back. This results in significantly more light landing on the photodiode substrate, allowing you to capture excellent images with less light exposure. Upgrading to this camera is like upgrading to a faster OTA!

    ZWO ASI678MC Planetary Camera Specs

    Upgraded with STARVIS 2 Technology

    ZWO's STARVIS 2 technology removes all amp glow from the ASI678MC, and lowers readout noise for higher sensitivity. A large reduction in dark current noise results in significantly improved near infrared performance as well. When compared with its ASI178MC predecessor, the new ASI678MC is an upgrade across the board, with better performance in all important categories.

    Color or mono
    Amp Glow
    Sensor Size
    3840x2160 4K
    3096x2080 3K
    Pixel Size
    Readout Noise
    QE Peak
    Full Well
    Back Focus
    Maximum FPS


    Zero Amplifier Glow

    The ASI678MC was designed to remove all amp glow from captures at the hardware level, regardless of exposure length or gain settings. You'll have the flexibility to customize exposure length without the worry of introducing amp glow and losing detail in parts of your images.

    ZWO ASI678MC Zero Amp Glow

    300s Exposure on ASI678MC Showing Zero Amplifier Glow

    The addition of a built-in HCG mode has allowed a marked reduction in readout noise at high gain levels, allowing a fixed dynamic range across a wide sensitivity. As you can see in the chart below, once the gain is set at 80 or above, the HGC mode is activated and readout noise is reduced to 1.0e or less with 12bits of data.

    Full Well Gain Chart
    Dymanic Range vs. Readout Noise

    ASI678MC Quantum Efficiency & Dark Current

    Close attention was paid to the quantum efficiency curve in order to optimize performance. The result is an improved signal-to-noise ratio due to a reduction in readout noise. Similarly, ZWO worked hard to keep dark current noise at a minimum, achieving significant reductions when compared to the ASI678MC's predecessor, especially at higher sensor temperatures.

    ZWO ASI678MC Quantum Efficiency
    ASI678MC Dark Current
    ZWO Connection Method

    Connection Method

    ZWO ASI678MC Connection Options Include USB 3.0 ST4 port and a 1/4 inch screw hole

    Connection Options

    The ASI678MC camera comes with a 1/4" screw hole for mounting on traditional tripods. Connect the camera to your mount via the ST4 port (ST4 cable included) and use the USB 3.0 port (USB 3.0 cable included) to connect to your computer.

    ASI678MC Dimensions Diagram


    What's in the box

    What's In The Box

  • specifications

    ADC12 bit
    Back Focus12.5mm
    Camera ConnectionFemale M42x0.75
    Color or MonoColor
    Dynamic Range12 Stops
    Free ShippingYes
    Full Rez Frame Rate47.5fps
    Full Well11.27ke
    Max Frame Rate47.5fps
    Mega Pixels5 to 8 MP
    Peak QE83%
    Pixel Array3840 x 2160
    Pixel Size2 microns
    Read Noise1e
    Sensor Diagonal10mm or Less
    Sensor TypeCMOS
    SensorSony IMX678
    Weight0.28 lb
  • included items

    • ASI678MC camera body
    • 1.25" cover
    • ST4 cable
    • 1.25" nose piece
    • Quick guide
    • 2.0m USB 3.0 cable

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