ZWO ASI294MM-P Cooled Monochrome USB Camera

SKU: ASI294MM-P Categories: , ,

The ASI 294 MM Pro Monochrome USB cooled camera is ideal for Deep Space Photography and is  the monochrome version of the ASI294MC Pro – one of the top selling cameras from ZWO.

A feature packed camera with a very high QE-value with a peak at about 90%, but also feature an ultra-low readout noise of 1.2e. If you are looking for a small-format monochrome camera for astrophotography, you can’t go wrong with the ASI294MM Pro.


Key features:

  • Colour or Monochromatic: Monochrome
  • Fan Cooled: Yes
  • Sensor Model: Sony IMX492, CMOS
  • Sensor Size: 23.1mm (4/3″)
  • Resolution: 4144 x 2822
  • Megapixel: 11.7
  • Pixel Size: 4.63 micrometers (µm)
  • Max Analogue to Digital Converter Resolution: 14 bit


$2,299.00 inc GST

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14-bit ADC and 13stops dynamic range

ASI294MM Pro has very similar parameters as its color version. Both have the 14bit ADC and a high dynamic range of 13 stops, which is even higher than that of the well-known and celebrated ASI1600MM Pro camera.

Backlit Sensor

Sony’s back-illuminated CMOS image sensor improves the sensitivity and noise reduction – the key factors to enhancing image quality. It does this by radically realigning the fundamental pixel structure from front-illumination to back-illumination, while still retaining the advantages of CMOS image sensors such as low power consumption and high-speed operation.

With a conventional front-illumination structure, the metal wiring and transistors on the surface of the silicon substrate that form the sensor’s light-sensitive area (photo-diode), impede photon-gathering carried out by the on-chip lens. A back-illuminated structure minimizes the degradation of sensitivity to the optical angle response, while also increasing the amount of light that enters each pixel due to the lack of obstacles such as metal wiring and transistors. These components have been moved to the back-side of the silicon substrate.

Unlocked Bin1 Mode

Yet another perk of the ASI294MM Pro is that the pixel size is switchable – you can switch between unlocked Bin1 mode and Bin2 mode anytime in your astrophotography software. The unlocked Bin1 mode changes the pixel size into 2.3um and increases resolution to 8288×5644. The ability to unlock bin1-mode was a popular request from our customers. Of course we listened to you and worked quickly to make it possible.




Sensor: Sony IMX492 CMOS
Diagonal: 23.1mm
Resolution: 11.7 Mega Pixel 4144*2822
Pixel Size: 4.63μm
Bayer Pattern: TBA
Shutter: Rolling shutter
Exposure Range: 32μ s 2000s
ROI: Supported
Read Noise: 1.2 – 7.3e
QE peak: 90%
Full well: 66000e
ADC: 14bit
DDRIII Buffer: 256MB
Non-volatile memory/On camera storage: TBA
Interface: USB3.0/USB2.0
Adaptor: M42X0.75
Protect window: A R coated filter
Dimensions: 78mm Diameter
Weight: 410g
Back Focus Distance: 6.5mm
Cooling: Regulated Two Stage TEC
Delta T: 35°C-35°C below ambient
Camera Power consumption: 12V 3A Max
Cooler Power consumption: 12V at 3A Max
Working Temperature:  40°C Max
Storage Temperature:  -10°C — 60°C
Working Relative Humidity: 20% — 80%
Storage Relative Humidity: 20% — 95%
Max FPS at full resolution:  10 Bit ADC 8288*5644  5.7fps
7680*4800  6.7fps
6400*4096  7.8fps
4096*2160  14.3fps
3840*2160  14.3fps
1920*1080  26.6fps
1280*720  37.4fps
640*480  51.1fps
320*240  80.9fps
Max FPS at full resolution:  12 Bit ADC 8288*5644  4.6fps
7680*4800  5.3fps
6400*4096  6.2fps
4096*2160  11.4fps
3840*2160  11.4fps
1920*1080  21.2fps
1280*720  29.8fps
640*480  40.8fps
320*240  64.6fps