Skip to content

ZWO ASI294MC USB 3.0 Color Astronomy Camera

shipping truck Free shipping
SKU: ZWO-ASI294MC
$699.00 $629.10
Price match Guarantee

Get a FREE ZWO Key Chain with Purchase!

ZWO ASI294MC Color Astronomy Camera


Sony IMX294CJK CMOS Sensor

The first in-house imaging sensor for astronomy cameras to support the Type 4/3 format, the Sony IMX294CJK achieves the pixel number output required for 4K at 120 frame/s (in ADC 10-bit output mode, the ASI294MC can run up to 25 fps at 4K format base on USB3.0 bandwidth). Furthermore, the ASI294MC uses a large-size pixel to realize SNR1s of 0.14 1x* which is nearly the value of the ASI224 (0.13 1x*).

Exceptional Low Illumination Performance

The combination of a large-size optical system and pixel area expansion to 4.63 µm enables extraordinary low-illumination performance. As a result, the IMX29CJK is the ideal sensor for astronomical imaging applications that necessitate low-illumination performance.

Additional Highlights

  • The ASI294MC features 14-Bit ADC and can achieve a dynamic range of 13 stops, an improvement over even the ASI1600.
  • Full well capacity is 63700e, three times the capacity of the ASI1600. Even when exposed for long periods, bright stars won't saturate. The ASI294MC can reach a higher SNR (signal to noise ratio) with one individual exposure.
  • A back-illuminated type sensor, the IMX294 has a very high QE estimated to be more than 75%.
  • USB 3.0 port supplies 5 gb of bandwidth to make running the ASI294MC at 16 fps (14bit, normal mode) or 19 fps (10bit, high speed mode) at full 11.7 MP resolution possible.


ASIair Camera Control (sold separately)

There is a wireless camera control solution available for this camera, and it's called the ZWO ASIair. This small wireless module allows you to focus, take images, make adjustments with your smartphone or tablet, and even do plate solving and computerized mount control with the built-in SkySafari bridge. If you'd like to add an ASIair to your camera order, you can find it in the suggested accessories section.

ZWO ASI294MC Color Astronomy Camera Specifications


  • Sensor: 4/3" Sony IMX294 CMOS
  • Diagonal: 21.6 mm
  • Resolution: 11.7 MP
  • Pixel Array: 4144 x 2822
  • Pixel Size: 4.63 µm
  • Bayer Pattern: RGGB
  • Minimum Exposure Time: 32 µs
  • Maximum Exposure Time: 2,000 s
  • ROI: Supported
  • ST4 Guider Port: Yes
  • Focus Distance to Sensor: 12.5 mm
  • Shutter Type: Rolling
  • Protect Window: AR coated
  • Operating System Compatibility: Mac, Windows, Linux
  • Interface: USB 3.0/USB 2.0
  • Bit Rate: 14-bit output (14-bit ADC)
  • Adapter: 2"/ 1.25"/ M42x0.75
  • Dimensions: 62 mm x 36 mm
  • Weight: 4.2 oz. without lens
  • Working Temperature: -5°C - 45°C
  • Storage Temperature: -20°C - 60°C
  • Working Relative Humidity: 20% - 80%
  • Storage Relative Humidity: 20% - 95%