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QHY183C – Planetary Imaging & Autoguiding Camera

QHY183 is a model designed for astrophotography. It exhibits excellent sensitivity and low noise, with the back illuminated 183 having higher sensitivity and somewhat higher resolution.  It is well suited to planetary and deep-space imaging particularly when mated with the CFW3 filter wheel. This model has two-stage thermal electric cooling of the sensor to about minus 40 degrees C below ambient for maximum reduction of dark current noise in long exposures.

QHY183 incorporates QHY’s Anti-Amp Glow technology to significantly reduce typical CMOS amplifier glow to a minimum, allowing excellent calibration by subtracting a dark frame.

QHY183 utilizes the Anti-Dew features common to the QHY COLDMOS cameras. Dew is moisture that condenses from the air onto the outside of the chamber window.  Frost is water vapor that freezes when it comes into contact with the inside of the chamber window or the surface of the sensor.  QHY has nearly 20 years of experience designing cooled cameras and these models benefit from those years of anti-dew and anti-frost design experience.  To help prevent dew from forming on the chamber window heating elements are built into the light shield just above the chamber. To avoid frost from forming inside the chamber a desiccant tube is provided that can easily be attached by the user to the outside of the camera when needed to dry the internal atmosphere of the chamber and remove any built-up moisture.

QHY183 models can be used as guiding devices, too.  The opto-isolated guiding port is a standard ST-4 configuration using an RJ11 style Jack.  A guiding cable is included with each camera.

The 183 with its smaller higher resolution sensor is a good match to short focal length telescopes or for imaging smaller dim objects through a large scope.  The larger 163 gives a greater field of view and would be a good choice for imaging larger areas of the sky such as nebula or when coupled to a longer focal length telescope to take greater advantage of the scopes full field.

The QHY183M is a one-inch, 20 Megapixel back-illuminated monochrome CMOS camera with a peak QE of 84%.  The pixel size is 2.4um, yielding high-resolution with modest size telescopes.  The camera is capable of producing 15FPS@20 Megapixels.  It has a two-stage TEC that cools the sensor to -40C to -45C below ambient.  The ADC is 12-bit / 16-bit with 1e- read noise!  The computer interface is USB 3.0 and exposure times can be set from 50us to 3600sec.


  • ModelQHY183M/C
    Pixel Size2.4um*2.4um
    Effective Area5544*3694
    Effective Pixels20 mega
    Sensor Size


    Typical 1 inch


    AD Sample Depth12bit (output as 16bit and 8bit)
    Max Full Frame Rate and ROI Frame Rate 5544*3864 Full Resolution

    19FPS@8BIT    7.5FPS@12BIT

    4096*2160 4K HD Video

    31FPS@8BIT  12FPS@12BIT

    1920*1080 HD Video

    60FPS@8BIT   24FPS@12BIT

    800*600 SVGA

    106FPS@8BIT   42FPS@12BIT

    640*480  VGA

    130FPS@8BIT   53FPS@12BIT*
    And more resolutions (Support any region ROI)

    Readout Noise2.7e-@lowest gain

    1.0e@high gain

    Dark Current0.0024e/pixel/sec @ -15C
    Exposure Time Range50us-3600sec
    Unity Gain10
    Anti-Glow ControlYes
    Shutter TypeElectric Rolling Shutter
    Computer InterfaceUSB3.0
    Built-in Image Buffer128MByte DDR2 memory
    Cooling SystemDual Stage TEC cooler (-40C below ambient)
    Optic Window TypeQHY183M: AR+AR High Quality Multi-Layer Anti-Reflection Coating
    QHY183C: IR cut filter
    Anti-Dew HeaterSilicon gel tube socket
    Telescope InterfaceM42/0.75
    Back Focal Length17.5mm

What’s in the box

  • QHY 183C Pro
  • USB 3.0 cable (1.5m)
  • ST4 cable
  • Screw jack power cable (5.5-2.1mm male jack with locking nut to 5.5-2.1mm female jack)
  • Lighter plug adapter to 5.5-2.1mm power jack
  • Desiccant Drying Tube (desiccant not included)
  • M42 x 0.75mm to 1.25″adapter

Downloads / Manuals / Videos

The following manuals and downloads are available for this product:


QHY Manual (PDF)


The latest QHY 183C Driver and Software can be downloaded from the QHY CCD website.  Make sure you use the native drivers.

Driver Installation Video (Part 2 follows on)

YouTube video

Questions?  Call us on 1300 ASTRODOG or just use the form!

e.g. "Peter"
Weight2 kg
Dimensions22 × 22 × 22 cm

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