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ID# 001823

QHY183C Back-illuminated Color Camera

Santa Barbara, CA 93101
United States
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The QHY183C is a one-inch, 20 Megapixel back-illuminated color CMOS camera with 1e- of read noise and 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. The computer interface is USB 3.0 and exposure times can be set from 50us to 3600sec. The QHY183C received a Hot Product Award from Sky & Telescope in 2017.

Sony's Image Sensor Exmor R is a back-illuminated CMOS image sensor with improved sensitivity and noise reduction - the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It retains the advantages of CMOS image high-speed operation while dramatically improving sensitivity.

The QHY183C has a 128MB DDR Memory Buffer. A QHY183C 16-bit image is about 40MB, so 128MB of memory can easily buffer a full frame for transfer to the computer using QHY183C software with native single-frame shooting function, instead of intercepting a frame from a continuous video transmission. This makes data transfer to the computer stable and reliable because there is no USB bandwidth or busy CPU problems.

The QHY183C utilizes the Anti-Dew features common to the QHY COLDMOS cameras. A heated optical window prevents exterior dew from forming, and the CMOS chamber has a desiccant plug socket to prevent moisture from forming on the sensor at cold temperatures.

The QHY183C 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.


Sensor: Sony IMX183 ExmorR CMOS
Illumination: Back-illuminated
Total Pixels: 20 Megapixels
Pixel Size: 2.4um
Pixel Array: 5544 x 3694
Optical Format: 1-inch
Frame Rate: 15FPS@Full Res, 25FPS@12Megapixels
Shutter: Electronic
A/D Resolution: 12-bit
Read Noise: 1e- to 2.7e-
Full Well: 16ke-
Weight: 450g
Exposure: 50us - 3600sec
Cooling Delta: -40C, Regulated
Reference Price: $949 (Color Camera)

SPECIAL OFFER: Purchase the monochrome version of this camera (QHY183M) at $1099 and you will get a coupon included with the camera that entitles you to 50% off the QHY183C color camera!
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