QHY183 M/C

QHY183 M/C

84% QE Back-Illuminated CMOS

The QHY183M and QHY183C use a 1-inch SONY back-illuminated IMX183 sensor with 20.48 million pixels at 2.4um. This sensor has high sensitivity with 84% QE and a read noise as low as one electron. The full well capacity is 15 - 16,000 electrons. Two-stage cooling yields -40C cooling delta.

High Resolution

20.48 Megapixels Planets and DSO

With 20.48 megapixels, high resolution 2.4 um pixel size and up to 19 FPS frame rate, this camera is ideal for EAA real-time deep space observation, lucky imaging of deep space objects by capturing and stacking many short exposures. This can take great advantage of high resolution telescope optics, reduce the effects of atmospheric jitter, and obtain deep-sky images with rich details and high resolution. At the same time, short exposure can also reduce the requirements for tracking. 

4K Ultra HD Video Support

Support 4096 × 2160 31FPS 4K Ultra HD 1:1 video output.

Large Capacity Frame Buffer

Built-in 128MB DDRII Image Cache

The QHY183M/C has 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.

Cooled CMOS

1-Inch Format, 20.48MP High Value for Money

Back-illuminated imaging technology places the circuitry and electrodes behind the pixels on the back of the sensor, avoiding reflection and loss of light. The QHY183M\C back-illuminated CMOS camera not only has the high sensitivity of a back-illuminated sensor, but also ultra-low read noise, as low as one electron, making this camera extremely cost-effective.


Support 4096 × 2160 31FPS 4K Ultra HD 1:1 video output.

Amp Glow Supression

QHYCCD has developed a CMOS glow suppression function that greatly eliminates the amplifier glow during long exposures.

Anti-Fog Window Design

Two-stage cooling reduces the sensor temperature to -40° C below ambient. But the optical window has a built-in heating plate to prevent condensation, even in humid environments.


  • Version: QHY183M(Monochrom) QHY183C(Color)
  • CMOS Sensor:  SONY IMX183 BSI CMOS
  • AR Coating On Sensor: Yes
  • Pixel Size: 2.4um*2.4um
  • Effective Pixel Area: 5544*3694
  • Effective Pixels: 20 megapixels
  • Effective Image Area: 13.3mm*8.87mm
  • FullWell Capacity: 15.5ke-
  • Peak QE: 84% (Monochrome)
  • AD Sample Depth: 12bit (output as 16bit and 8bit)
  • Sensor Size: Typical 4/3inch
  • Full Frame Rate and ROI Frame Rate: Full Resolution 19FPS (4096*2160) 4K HD Video 31FPS
  • Readout Noise: 2.7e-@lowest gain   1.0e@high gain
  • Dark Current: 0.0024e/pixel/sec @ -15C
  • Exposure Time Range: 50us-3600sec
  • Anti-Glow Control: Yes
  • Shutter type: Electric Rolling Shutter
  • Weight: 650g
  • Computer Interface: USB3.0
  • Built-in Image Buffer: 128MByte DDR2 memory
  • Cooling System: Dual Stage TEC cooler (-40C below ambient)
  • Anti-Dew Heater: Yes
  • Telescope Interface: M42/0.75
  • Optic Window Type: AR+AR High Quality Multi-Layer Anti-Reflection Coating (For color camera user need to add a UV/IR filter in the light path)