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ZWO ASI294MC Pro Color Cooled – USED (ASI294MC-P-U) Online Sale

Original price was: $800.00.Current price is: $240.00.
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14 - 21 Mar, 2025
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Description

ZWO ASI294MC Pro Color Cooled – USED

The ZWO ASI294MC Pro Color uses the Sony IMX294 sensor with a diagonal of 23.2mm. It has a 14bit ADC and low read noise.

 

IMX294CJK

Sony 10.71M-Effective Pixel Color CMOS Image Sensor (official description from Sony site), with a diagonal of 21.63mm (4 3 format). ZWO has refined the sensor and remolded it to increase the diagonal to 23.2mm with approximately 11.71M-Effective pixels (4 3 format).

High-Sensitivity Type 4 3 CMOS Image Sensor that Supports 4K for Astronomic Cameras and Industrial Applications

The IMX294CJK sensor is the first in-house image sensor for astronomic cameras to adopt the 4 3 format and provides the necessary number of pixels for true 4k output at 120 frames per second (w ADC 10-bit output mode, the ASI294MC can run up to 25fps at 4k format when used with USB 3.0). In addition, the use of larger-sized pixels achieves SNR1s of 0.14 lx* which is very close to the value of the ASI224 (0.13 lx*).

Exceptional low-illumination performance

Exceptional low-illumination performance of SNR1s: 0.14 lx is realized by use of a large-size optical system and by expanding the area per pixel to 4.63 µm. This makes the IMX294CJK ideal for astronomic camera market applications that require low-illumination performance.

USB3.0 & 256M DDR3 Memory

The ASI294MC Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.

 

14bit ADC w 13 stops DR

The ASI294 has a 14bit ADC unit, allowing it to achieve 13 stops of dynamic range. This is an excellent characteristic for deep sky imaging, which is inherently high dynamic range. At 13 stops, the ASI294 has even more dynamic range than the ASI1600.

HCG Mode

HCG (high conversion gain) mode, which reduces read noise to even lower levels at higher gain without loss to dynamic range, is automatically enabled when the gain setting is 120 or higher. Read noise will drop under 2e-, while dynamic range will remain at 13 stops.

 

Full well Capacity

63700e full well, which is 3 times than ASI1600’s capacity. Even bright stars won’t saturate under long exposure.This camera can achieve higher SNR(signal to noise ratio) with just one single exposure.

Reliable Mechanics

ASI294MC Pro has same mechanics as ASI1600 Pro. There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable. Even when used in higher humidity environments, ASI294MC Pro will still work fine without dew problems.

High QE

The IMX294 sensor is a BSI (backside illuminated type) sensor, which has very high QE (quantum efficiency, which we estimate is over 75% peak).

 

Dark Current

The dark current of the ASI294 is a bit lower than the ASI1600 at same temperature, based on our test results. Dark frame sample @ Highest dynamic range settings, 300s, -10°C, bin1. Please check the dark frame to make sure you fully know the performance.

 

USB 3.0 Port & USB2.0 HUB

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI294 Pro to run at 16 fps (14bit, normal mode) or 19 fps (10bit, high speed mode)  at full resolution(11.7Mega).

USB 2.0 HUB: can connect with various accessories, such as filter wheel, guide camera and electronic focuser, so you can better manage your cables. The ASI294 Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the external power source if you connect one.

 

Cooling System

The ASI294 Pro has a 2-stage TEC cooling system that enables deep cooling (35°C-40°C below ambient). The cooler requires an external power supply, which is not included with the camera. Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V. Using a battery 9-15V is also suitable for the cooler power supply.

 

Connecting Diagram

 

  1. M43-T2 adapter (optional)
  2. EOS-T2 adapter (optional)
  3. 2” Filter (optional)
  4. 1.25” T-Mount
  5. 1.25” Filter (optional)
  6. M42-1.25” adapter
  7. T2 extender 11mm
    1. Technical Specifications

      Sensor

      4 3″ SONY IMX294 CMOS

      Diagonal

      23.2mm

      Resolution

      11.7Mega Pixels 4144X2822

      Pixel Size

      4.63µm

      Bayer Pattern

      RGGB

      Shutter

      Rolling shutter

      Exposure Range

      32µs-2000s

      ROI

      Supported

      Read Noise

      1.2-7.3e

      QE peak

      TBD

      Full well

      63.7ke

      ADC

      14bit

      DDRIII Buffer

      256MB Non-volatile memory On camera storage: Build-in total 192K byte user-accessible space(image size up to 480X320)

      Interface

      USB3.0 USB2.0

      Adaptor

      M42X0.75

      Protect window

      D32-2-AR

      Dimensions

      78mm Diameter

      Weight

      410g

      Back Focus Distance

      6.5mm

      Cooling

      Regulated Two Stage TEC

      Delta T

      35°C-40°C below ambient

      Camera Power consumption

      650mA at 5V

      Cooler Power consumption

      12V at 3A Max

      Working Temperature

      -5°C—45°C

      Storage Temperature

      -20°C—60°C

      Working Relative Humidity

      20%—80%

      Storage Relative Humidity

      20%—95%

      Max FPS at full resolution

      10Bit ADC: 4144×2822 19fps

      14bit ADC: 4144×2822 16fps

      Resolution USB 3.0 Raw16

      4144×2822 16.3fps

      4096×2160 21.1fps

      3840×2160 21.1fps

      1920×1080 40.9fps

      1280×720 59.7fps

      640×480 85.9fps

      320×240 153.4fps

      Resolution USB 3.0 Raw8& HighSpeed

      4144×2822 19.0fps

      4096×2160 24.7fps

      3840×2160 24.7fps

      1920×1080 47.9fps

      1280×720 69.8fps

      640×480 100.5fps

      320×240 179.3fps

       

      In the Box

      Title

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