Astronomy Specialist



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The QHY 178C is a cooled colour camera that contains the Sony IMX178 colour back-illuminated sensor. It has 6 Megapixels with a diagonal of 8.9mm. The pixels have a size of 2.4 µm. This camera is ideal for serious planetary imaging and entry-level deep sky photography.


This camera has a two-stage TEC cooling system that brings the temperature of the sensor 40C° below ambient for low noise imaging, even in warm climates. 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 178C 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 with other processes. 

The optical window has an IR/UV cut coating which is necessary for a correct colour balance. The QHY 178C has zero amplifier glow no matter how long the exposure is.



Sensor Sony Exmor R IMX178 Back-illuminated
Resolution 6 Megapixels 3072 x 2048
Pixel size 2.4 µm
Sensor size 7.37 mm x 4.92 mm (8.9 mm diagonal)
Exposure range 50µs - 1800s
Read noise 0.9e- at high gain ; 2.4e- at lowest gain
Full well capacity 15,000 e-
Bit rate 10-bit / 14-bit ADC
Frame rate 50 fps at full resolution
Shutter type Electronic shutter
Cooling ΔT of 40°C Dual Stage TEC cooler
Memory buffer 128Mb DDR II
ROI Supported
Compatibility Mac, Windows, Linux
Optical window IR/AR coating
Ports USB 3.0, ST4, CFW
Back focus 18 mm
Connections M42 x 0.75 female thread & 2" adapter
Weight 450 gr
Power supply 12V




  • QHY 178C
  • USB 3.0 cable (1.5m)
  • ST4 cable
  • Screw jack power cable (5.5-2.1mm male jack with locking nut to 5.5-2.1mm female jack)
  • Lighter plug adapter to 5.5-2.1mm power jack.
  • Desiccant Drying Tube (desiccant not included)
  • M42 x 0.75 to 1.25" adapter (with internal 1.25" filter thread)


    Guide to installing QHY and ASCOM drivers for QHYCCD cameras.
    ZWO camera software QHY camera drivers

    ZWO camera software QHY 178C manual

    Welcome Newcomer