ZWO - ASI294MM Pro Monochrome USB 3.0 CMOS Camera - ZWO-ASI294MM-P
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The ZWO ASI294MM Pro is a back-illuminated, 4/3” format, 14-bit ADC camera with 4.63um pixels. It is the mono version of ASI294MC Pro, one of the top-selling cameras from ZWO. It has an impressive 66ke- full well capacity and 4144*2822 big resolution.
ZWO ASI294MM Pro Monochrome CMOS Camera
The ZWO ASI294MM Pro is a back-illuminated, 4/3” format, 14-bit ADC camera with 4.63um pixels. It is the mono version of ASI294MC Pro, one of the top-selling cameras from ZWO. It has an impressive 66ke- full well capacity and 4144*2822 big resolution.
Not only does it have a very high QE value with a peak at about 90%, but features an ultra-low readout noise of 1.2e. If you are seeking a small-format mono camera for astrophotography, then ASI294MM Pro will be your ideal choice.
14-bit ADC and 13stops dynamic range
The ZWO ASI294MM Pro Camera has very similar parameters to its color version. Both have a 14-bit ADC and a high dynamic range of 13 stops, which is even higher than that of the ASI1600MM Pro camera.
Backlit Sensor
The back-illuminated CMOS sensor improves sensitivity and noise reduction – the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained 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 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 that have been moved to the reverse of the silicon substrate.
Camera Performance
Large well depth capacity, low read-out noise and high dynamic range.
The full well capacity of 66387e of ASI294MM Pro is near the top of all ASI DSO cameras. It ensures a very high dynamic range of up to 13 stops that will greatly reduce overexposure probability and help gain richer color gradation.
When the gain value is 120, the magical HCG high gain mode is turned on, the readout noise will be largely decreased (as low as 1.2e), and the dynamic range is basically unchanged.
Reliable Mechanics
Four screws on the camera seal the sensor chamber. This kind of design has been extensively tested and is very stable. Even when used in higher humidity environments, the ZWO ASI294MM Pro Camera will still work fine without dew problems.
In addition, ASI294MM Pro also has a polyimide anti-dew heater completely fitting the protective window which will help further avoid dew problems.
The anti-dew heater power is around 5W and can be turned off in software to save power.
QE Value
As ZWO’s latest BSI (backside illuminated type) mono camera, ASI294MM Pro has very high QE performance, not only higher than its color version but even ASI1600MM Pro. It is estimated that the QE peak value is about 90%.
Two-Stage TEC Cooling: Ultra-Low Dark Current
ASI294MM Pro uses two stage TEC cooling that can lower the CMOS sensor temperature to 35c~40c below ambient, which can greatly reduce dark current generation and sensor noise even with extended exposure times.
The unique dark current suppression technology can even further reduce dark current noise. When it’s cooled to -20℃, the current noise can be as low as 0.0022e/s/pix, which is completely negligible!
Please notice that the camera needs to be connected to an external 12v power supply to implement the cooling function. We recommend you use a 12V@3A DC adapter (5.5*2.1mm, center pole positive) or a lithium battery with 11-15V to power the camera.
USB3.0 & 512M DDR3 Memory
The ZWO ASI294MM Pro Camera is equipped with a USB 3.0 transmission interface and a built-in 512MB(2Gb) DDR3 cache to ensure stable and secure data transmission. Under long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.
Brand | ZWO |
---|---|
Free Shipping | Free Shipping Available |
ADC | 14 bit |
Includes Autoguide Port | No |
Backfocus Distance | 6.5mm/17.5mm |
Camera Format | 4/3" |
Dynamic Range | 13 stops |
Frames Per Second (FPS) | 16.3 maximum at full resolution |
Full Well Capacity | 66ke |
Image Stabilization | No |
Pixel Size | 4.63um |
Quantum Efficiency (QE) | About 90% |
Readout Noise | 1.2-7.3e |
Resolution | 8288 x 5644 with bin 1 mode |