ZWO ASI 294MC USB 3.0 Colour Camera
 ZWO ASI 294MC USB 3.0 Colour CameraZWO ASI 294MC USB 3.0 Colour Camera 

ZWO ASI 294MC USB 3.0 Colour Camera

  (1 Review)
✓ 2 year warranty


1x in stock shipped 1-2 working days

About this product

Model:  zwo_asi294mc
Part Number:  ZWO ASI294MC

The first astronomy camera series equipped with SONY's new IMX294CJK sensor.

The ZWO ASI1294MC features Sony's remarkable IMG294CJK 4/3 CMOS sensor with a massive 4144x2822 resolution!  That's over 11 megapixels!


  • Sony IMX294 4/3 CMOS Sensor
  • Extremely low read noise - 1.2e @30db gain
  • 14Bit ADC - provides real 14bit dynamic range
  • Electronic shutter - no issues with vibrations sometimes found in mechanical shutters
  • USB3.0 Port (back compatible with USB2.0) - 16fps@4144×2822
  • AR coated protective window - all light can pass
  • Compatible with Windows / Mac OS / Linux

IMX294 Sensor

23.2mm diagona,l approximately 11.7 megapixels.

Back illuminated highly sensitive 4.63μm pixels.

The 'IMX294CJK' is the first image sensor for astronomy cameras to adopt the 4/3 format and achieves the number of pixels required for 4K at 120 frame/s (in ADC 10-bit output mode, ASI294MC can run up to 25fps at 4k format base on USB3.0 bandwidth).   In addition, the large-size pixels achieve SNR1s of 0.14 lx*, which is very close to ZWO's ASI224 (0.13 lx*). 

All ZWO cameras include a 2-year warranty. 

Camera Field of View Simulator

Astrophotography Performance

Exceptional low-illumination performance of SNR1s: 0.14 lx is achieved using a large-size optical system and by expanding the area per pixel to 4.63 µm.  This makes the IMX294CJK sensor an excellent choice for astrophotography which requires high performance in low light. 

14bit ADC & 13 stops DR

14bit ADC can achieve 13 stops dynamic range, which is even better than ASI1600. 

HCG Mode

HCG mode will be on when gain is higher than 120 (12db), read noise will drop below 2e but same dynamic range (13 stops).

Full well Capacity

63700e full well is 3 times greater than the ASI1600’s capacity.  Even bright stars won’t saturate under long exposure.

Can achieve higher SNR (signal to noise ratio) with just one single exposure.

High QE

IMX294 sensor is a BSI (back-illuminated type) sensor so has very high QE (ZWO measure the QE peak higher than 75%).

USB Ports

USB 3.0 Port: Provides 5Gb bandwidth making it possible for to run the ASI294MC at 16 fps (14bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution (11.7 Megapixel).

ST4 Port: Can be used to connect the camera to the mount's auto-guide port for guiding. 

ASI294MC Mechanical Drawing

What's in the box

  • ASI294MC Camera
  • T2-1.25" Nosepiece Adapter
  • 1.25" Cap
  • 2" Cap
  • 2-metre USB 3.0 Cable
  • ST4 Cable
  • T2-1.25" Adapter
  • Quick Start Guide


Sensor 4/3″ SONY IMX294 CMOS
Diagonal 23.2mm
Resolution 11.7Mega Pixels 4144X2822
Pixel Size 4.63µm
Bayer Pattern RGGB
Exposure Range 32µs-2000s
ROI Supported
ST4 Guider Port Yes
Focus Distance to Sensor 12.5mm
Shutter Type Rolling Shutter
Protect window AR coated window
Operating System Compatibility Mac, Windows, Linux
Interface USB3.0/USB2.0
Bit rate 12bit output(12bit ADC)
Adaptor 2″ / 1.25″ / M42X0.75
Dimension φ62mm X 36mm
Weight 120g or 4.2 ounces (without lens)
Working Temperature -5°C—45°C
Storage Temperature -20°C—60°C
Working Relative Humidity 20%—80%
Storage Relative Humidity 20%—95%


Supported Resolutions:

10Bit ADC

  • 4144×2822 19fps

14bit ADC

  • 4144×2822 16fps

Additional resolutions can be user defined.

Downloads / Manuals

The following manuals and downloads are available for this product:


ZWO Software and Drivers


Customer reviews

Average Rating (1 Review):  
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Rating (max 5):  
ZWO 294
27 February 2019  | 

Good, fast service from Flo as always.The Camera is a step up from my other ZWOs (120, 174, 290) being much closer to DSLR in FoV and file size!
First light was stunning - very fast and good deep colour - very little processing needed.
Only used on DSOs -which was the intention anyway, and certainly lives up to it's many positive reviews. As it is fast, and living in the cold north, I did not really need a cooled version -especially with Sharpcap live view bringing in images in minutes.


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