Astronomy Specialist




The QHY 168C Pro is a cooled colour camera with large pixels and low noise. It contains the Sony IMX 071, which is an APS-C sensor, the same sensor that is used in the Nikon D5100 DSLR camera. The pixels measure 4.8µm, making this camera ideal for medium-long focal length telescopes but also camera lenses and short refractors that may suffer from elongated stars on the borders. Large pixels can mask minor aberrations of the telescope that are generally visible in cameras with small pixels (2-3 µm).

Unlike DSLR cameras, the QHY168C Pro offers true RAW Image output that only records the signal without artefacts. Standard DSLR's have the RAW output option but the file is altered with noise reduction and hot pixel removal, undermining the maximum post processing capabilities and final quality of the image.

This camera has a two-stage TEC cooling system that brings the temperature of the sensor 35C° to 40C° below ambient for low noise imaging, even in warm climates. The dark current at -15°C is only 0.0007 electron/pixels. In addition to thermoelectric cooling, QHYCCD employs a unique thermal noise control technology to reduce CMOS sensor noise to a very low value without affecting the integrity of the raw image. The QHYCCD proprietary technology produces a much better noise reduction than any other astronomy camera in the market. QHYCCD has more than 10 years of experience designing cooled cameras. The QHY 168C employs a full anti-dew technology for both CCD sensor cover glass and the sensor chamber optical window.

The 128MB DDR II memory buffer facilitates the download of images to the computer, especially when USB traffic is high, the writing speed of your computer is slow or occupied in other processes. 

In order to avoid halos around bright stars, the QHY168C has an AR coated optical window on both sides rather than the common IR/UV cut window. For a better RGB colour balance, it is recommended to use a UV/IR cut filter.

Every QHY 168C Pro camera is carefully calibrated  with a high-precision axis measurement device. The orthogonal placement of the sensor in the camera body is guaranteed to be flat to the image plane with a precision higher than +/-20µm across the sensor, from edge to edge, so there is no need to adjust the camera tilt. This is an enormous advantage especially in fast telescopes such as F/2.8-F/4 astrographs which are very sensitive to tilted sensors.

The QHY 168C has zero amplifier glow no matter how long the exposure is.




 QHY has designed a number of adapter/spacer kits for the 168C for different setups:

Connection to coma corrector requiring 55mm backfocus and M48 interface

Connection to Canon EF lens

Connection to Nikon F lens
Sensor Sony IMX 071 APS-C CMOS - COLOUR
Resolution 16 Megapixels 4952 x 3288
Pixel size 4.8 µm
Sensor size 23.76 mm x 15.78 mm (28.52 mm diagonal)
Quantum efficiency 50% 
Exposure range 30µs-3600s
Read noise 2.3e- at high gain ; 3.2e- at lowest gain
Dark current 0.0007 e-/pixel/sec @ -15C
Full well capacity 46,000 e-
Bit rate 14 bit ADC
Frame rate 10 fps at full resolution
Shutter type Rolling shutter
Cooling ΔT of 40°C Dual Stage TEC cooler
Memory buffer 128Mb DDR II
ROI Supported
Compatibility Mac, Windows, Linux
Optical window AR coated (both sides)
Ports USB 3.0
Compatibility Mac, Windows, Linux
Back focus 17.5 mm
Connections M54 x 0.75 female thread (in the camera)
Dimensions Ø 90 mm; ↨ 104.5 mm
Weight 700 gr
Power supply 12V 3A  (2.1×5.5 mm  connector)





  • QHY 168C Pro
  • USB 3.0 cable (1.5m)
  • Screw jack power cable (5.5-2.1mm male jack with locking nut to 5.5-2.1mm female jack)
  • Desiccant Drying Tube (desiccant not included)
  • Camera dovetail to M54 x 0.75 adapter with 3 thumb screws at 120° (6mm optical thickness)
  • M54 x 0.75 to 2"adapter (2.5mm optical thickness, M48 x 0.75 internal thread for standard 2" filters)



    Video presentation of the QHY168C.


    Guide to installing QHY and ASCOM drivers for QHYCCD cameras.

    ZWO camera software QHY camera drivers

    PDF Icon Small QHY 168C manual

    Welcome Newcomer