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QHY183 Download And Document
20 Megapixel 1” Back-Illuminated CMOS Monochrome/Color Camera
for beginner and for ultra portable setups

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 19FPS@20 Megapixels. It has a two-stage TEC that cools the sensor to -40C to -45C below ambient. The ADC is 12-bit with 1e- read noise! The computer interface is USB 3.0 and exposure times can be set from 50us to 3600sec.
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 QHY183M has a 128MB DDR Memory Buffer. A QHY183M 16-bit image is about 40MB, so 128MB of memory can easily buffer a full frame for transfer to the computer using QHY183M 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 QHY183M 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 QHY183M 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.

The QHY183M can works with QHYCFW3S and QHYCFW3M. The sensor size is suitable for 1.25inch filters. The QHYCFW3S support 7-position 1.25inch filter wheel disk. We recommend the combination of QHY183M+QHYCFW3S with 7 position disk. In this setup you can put all necessary filter into the disk, includes the L,R,G,B,Ha,OIII,SII.

The QHY183C is the one short color version of QHY183M, with RGGB bayer filter on the chip. The QHY183C can output the color image without the filters. Since it has very small pixels , but also has 1inch sensor size. It suitable for both planetary imaging and deep sky object imaging. With the USD949 price, it is an affortable camera for the educations. 

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