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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.

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 accuracy making the night more productive.

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.

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.

USB3.0 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.

QHY183 COLDMOS CAMERA SPECIFICATION
Model 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 mega 
Effective Image Area
13.3mm*8.87mm
Fullwell
15.5ke-
Peak QE 84% (Monochrome)
AD Sample Depth
12bit (output as 16bit and 8bit)
Sensor Size
Typical 1 inch
Max Full Frame Rate and ROI Frame Rate 
Full Resolution 19FPS    @ 8BIT
(4096*2160) 4K HD Video 31FPS  @8BIT

7.5FPS@16BIT for Full frame and ROI mode
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
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)