ZWO ASI183MC Cooled Colour CMOS Camera


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    ZWO ASI183MC Cooled Colour CMOS Camera

    The ASI183MC Pro is ZWO’s new and most sensitive camera to date with a peak QE of 84% (in mono) made possible by a back illuminated sensor. The small pixels with large well depth, low read noise, and high QE make this camera most suitable for imaging at short focal lengths without sacrificing dynamic range or sensitivity. The Pro version also features deep cooling for low thermal noise when taking long exposures and a data buffer for consistent data transfer.

    ASI183MC Pro

    Introducing the ASI183 camera series, the most sensitive cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%!

    183MM Pro1


    Diagonal 15.86 mm Approx. 20.48M-Effective Pixel Monochrome/Color CMOS Image Sensor


    ▶High-Speed and High-Picture-Quality Rolling Shutter-Type Back-Illuminated CMOS Image Sensors

    In the astronomic application field, Sony IMX183CLK-J (monochrome) and IMX183CQJ-J (color) sensors uses a very high sensitivity back-illuminated structure with high resolution 2.4 μm square unit pixel.  The optical size is 1 inch.

    DDR Memory Buffer

    The ASI183 Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.



    Astrophotography Performance

    The ASI183 cameras has a very large full well capacity(15000e) for such small pixel size, 1.6e read noise @ 30DB, and 12stops dynamic range @ Gain=0. The ASI183 cameras also utilize firmware features to minimize amplifier glow for maximum performance in astrophotography.

    183 Gain RN DR FW vs gain


    Reliable Mechanics

    ASI183 Pro has same mechanics as ASI1600 Pro. There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable.

    Even when used in higher humidity environments, ASI183 Pro will still work fine without dew problems.

    High Speed

    Fast FPS can be used in solar and lunar imaging, as well as for live viewing/EAA.The high speed readout may also be used for real-time focusing, true lucky imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and much more.

    10Bit ADC
    5496×3672    19fps
    3840×2160    41.04fps
    1920×1080    80.10fps
    1280×720      117.30fps
    12bit ADC    
    5496×3672    19fps
    3840×2160    36.12fps
    1920×1080    70.48fps
    1280×720      103.23fps

    High QE

    Sony’s back-illuminated Exmor R technology, giving it excellent Deep Sky performance. ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still over 60%.

    Having high QE means more of the light that enters your telescope and reaches the sensor is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 will utilize a high percentage of the light that reaches it, improving your signal quality.


    Dark Current

    The dark current of the ASI183 is extremely low, based on our test results.


    USB 3.0 Port & USB2.0 HUB

    USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI183 Pro to run at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode)  at full resolution(20.18Mega).

    Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V.

    Using a battery with 9-15V is also suitable for the cooler power supply.

    USB 2.0 HUB: can connect with various accessories, such as filter wheel, guide camera and electronic focuser, so you can better manage your cables. The ASI183 Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the external power source if you connect one.

    183MC Pro2

    Cooling System

    The ASI183 Pro has a 2-stage TEC cooling system that enables deep cooling (40°C-45°C below ambient). The cooler requires an external power supply, which is not included with the camera.

    ASI 183MC-Pro Instruction Manual

    Connecting Drawing


    1. M43-T2 adapter

    2. EOS-T2 adapter

    3. 2”Filter (optional)

    4. 1.25” T-Mount

    5. 1.25” Filter (optional)

    6. M42-1.25” adapter (optional)

    7. T2 extender 11mm

    Mechanical Drawing


    What is in the box?

    ASI183 Pro box includes all necessary cables, adapters, and manuals.

    1600 294 183

    Camera technical details

    Sensor: 1″ CMOS IMX183CLK-J/CQJ-J
    Diagonal: 15.9mm
    Resolution: 20.18Mega Pixels 5496*3672
    Pixel Size: 2.4μm
    Bayer Pattern: RGGB
    Shutter:Rolling shutter
    Exposure Range: 32µs-2000s
    ROI: Supported
    Read Noise: 1.6e @30db gain
    QE peak: 84%
    Full well: 15ke
    DDRIII Buffer: 256MB
    Interface: USB3.0/USB2.0
    Adaptor: M42X0.75
    Protect window:AR window
    Dimensions: 78mm Diameter
    Weight: 410g
    Back Focus Distance: 6.5mm
    Cooling: Regulated Two Stage TEC
    Delta T: 40°C-45°C below ambient
    Camera Power consumption: 650mA at 5V
    Cooler Power consumption: 12V at 3A Max
    Working Temperature: -5°C—45°C
    Storage Temperature: -20°C—60°C
    Working Relative Humidity: 20%—80%
    Storage Relative Humidity: 20%—95%
    Max FPS at full resolution:
    10Bit ADC
    5496×3672 19fps
    3840×2160 41.04fps
    1920×1080 80.10fps
    1280×720 117.30fps
    640×480 169.92fps
    320×240 308.17fps
    12bit ADC
    5496×3672 19fps
    3840×2160 36.12fps
    1920×1080 70.48fps
    1280×720 103.23fps
    640×480 149.53fps
    320×240 271.19fps

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