QHY183C COLDMOS Back Illuminated 20MP Color Camera

QHY183C COLDMOS Back Illuminated 20MP Color Camera

Due to high demand and global product shortages due to the pandemic, please call for availability.

The QHY183M and QHY183C use a 1-inch SONY back-illuminated IMX183 sensor with 20.48 million pixels at 2.4μm. This sensor has high sensitivity with 84% Quantum Efficiency and a read noise as low as one electron. The full well capacity is 15,000 to 16,000 electrons. A two-stage TEC yields cooling to 40°C below ambient. Because of the small pixels, high QE, good sensor size and the cooled design, the QHY183M/C is suitable for both DSO and planetary imaging. And at such an affordable price, this camera is a potent entrant into the world of advanced imaging for the budget-conscious beginner. This camera was selected by Sky&Telescope magazine as a 2017 Hot Product, and by Astronomy magazine as a 2018 Star Product.

With 20.48 megapixels, high resolution 2.4μm pixel size and up to 19 FPS frame rate, this camera is well suited to EAA real-time deep space observation, or lucky imaging of deep space objects by capturing and stacking many short exposures. This can take advantage of high resolution telescope optics, reduce the effects of atmospheric seeing, yielding deep-sky images with rich details and high resolution. At the same time, short exposures can also reduce the requirements for tracking accuracy, thus making the night more productive.

Supports 4096 × 2160, 31FPS 4K Ultra HD 1:1 video output. In full resolution mode it can output a maximum of 19FPS. In the ROI it can go much higher in 8bit. This feature is ideal for planetary imaging and astronomical live video broadcast.

The QHY183M/C has a built-in 128MB DDRII full frame buffer that can help tremendously with slower computers. It also helps with USB2.0 connections by avoiding loss of frames after exposure and improves the data transfer stability with flow control.

QHYCCD has developed a CMOS glow suppression function that greatly eliminates the amplifier glow during long exposures. To redress the potential for fogging due to the significant cooling of the sensor, the optical window has a built-in heating plate to prevent condensation, even in humid environments.

Back-illuminated imaging technology places the circuitry and electrodes behind the pixels on the back of the sensor, avoiding reflection and loss of light by an otherwise partially masking matrix of electrical connections. The QHY183M\C back-illuminated CMOS camera not only has the high sensitivity of a back-illuminated sensor, but also the ultra-low read noise of as good as a single electron. And so this camera represents an extremely cost-effective, sensitive imaging solution.


  • Model: QHY183C (Color)
  • Sensor: Sony IMX183 Back Illuminated CMOS
  • Effective Pixels: 5544 x 3694 (20.5 MP)
  • Pixel Size: 2.4μm x 2.4μm
  • Effective Area: 13.3mm x 8.9mm
  • Shutter: Electric Rolling Shutter
  • Full Well Capacity: 15,000 - 16000e-
  • Readout Noise: 1e- @ high gain; 2.7e- @ low gain
  • Dark Current: 0.0024e-/p/s @ -15°C
  • Frame Rate:
    • 15 FPS @ 20 MP (full resolution)
    • 25 FPS @ 4K HD Video
    • 25 FPS @ 12 MP
  • ROI Support: Yes; any-area ROI
  • Exposure Time: 50&mus; to 3,600s (60 min)
  • A/D Sample Depth: 10bit/12bit (8bit/16bit output, MSB Alignment)
  • On-Camera Image Buffer: Yes, 128MB DDRII Buffer
  • Cooling: 2-stage TEC, typical -40 below ambient temperature, regulated
  • Power: USB powered for camera and 12VDC powered for TEC
  • Anti Dew Control: Air connector for removable silicon gel tube. Heat board for optic window of sealed CCD chamber
  • Computer Interface: USB3.0 Super Speed
  • Telescope Interface: M42/0.75 & 2" adapter. Optional C-mount adapter
  • Color Wheel Port: 4PIN QHYCFW2 socket
  • Guide Port: 6PIN RJ11 Guide Port
  • Optic Window: AR coated on both surfaces
  • Weight: 450g (15.9 oz)
  • Electric Interface: 12V input with lock, USB3.0 socket, 4PIN QHYCFW, 6PIN RJ11
  • Warranty: 1 to 2 years, depending on sensor