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ZWO ASI294MC Pro Cooled Color CMOS Astrophotography Camera


كاميرا ZWO ASI294MC Pro USB3.0 Cooled Color Astronomy Camera 256MB DDR3 Buffer

مثالية لتصوير الفضاء العميق وصور الكواكب! مستشعر micro four-thirds 11 MP.

تعزز كفاءة التحويل العالية الحساسية دون فقدان النطاق الديناميكي. تبريد ترموكهربائي حتى -35 درجة مئوية تحت درجة حرارة الغرفة. تسجيل فيديو 4k بسرعة 24 إطارًا في الثانية و 320 x 240 بسرعة 179.3 إطارًا في الثانية.

أضف لقائمة الرغبات

وصف المنتج

يجب توصيل جميع الكاميرات الاحترافية (المزودة بمبرد) بمصدر طاقة خارجي للصورة بجهد 11-15 فولت.

حتى في حالة عدم استخدام المبرد، يجب استخدام مصدر الطاقة حتى يتم التعرف على الكاميرا.

ASI294MC Pro

asi294Sensor5294pro logo

تعد ASI294MC Pro أول كاميرا في العالم مزودة بأحدث مستشعر Sony IMX294CJK. هذه واحدة من الكاميرات الأكثر مبيعًا من ZWO. وبالنظر إلى المواصفات ومقارنتها بالسعر المنخفض نسبياً، فمن السهل معرفة السبب. تشمل بعض النقاط البارزة ما يلي:

مستشعر بإضاءة خلفية - يعمل على تحسين الحساسية وتقليل الضوضاء
تنسيق 4/3 بوصة بحجم 4.63 ميكرومتر - مثالي للعديد من أنواع التلسكوبات
ADC 14 بت - مما يوفر نطاقًا ديناميكيًا عاليًا يبلغ 13 توقفًا
سعة بئر كاملة مثيرة للإعجاب 7ke- تساعد على تقليل مشكلة النجوم المشبعة، على سبيل المثال.

علاوة على ذلك، فهو يتمتع أيضًا بقيمة عالية جدًا من التيسير الكمي مع ذروة تزيد عن 75%. إذا كنت تبحث عن كاميرا OSC صغيرة الحجم للتصوير الفلكي، فلا يمكنك أن تخطئ في اختيار ASI294MC Pro.

294MC Pro3

مستشعر صور CMOS ملون فعال 10.71 ميجا بكسل من Sony (وصف رسمي من موقع Sony)، بقطر 21.63 مم (تنسيق 4/3). قامت ZWO بتحسين المستشعر وإعادة تشكيله لزيادة القطر إلى 23.2 مم مع حوالي 11.71 ميجا بكسل فعال (تنسيق 4/3).


▶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.

DDR Memory Buffer

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.


DDR memory buffer is the main difference between ASI “Cool” and “Pro” cameras.

14bit ADC w/ 13 stops DR

The ASI294MC Pro has a 14bit ADC unit, allowing it to achieve 13 stops of dynamic range. This is an excellent characteristic for deep sky imaging, which inherently needs high dynamic range. At 13 stops, the ASI294MC 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.

294 Gain RN DR FW vs gainFull well Capacity

The ASI294MC provides a great full well capacity of 63700e-, which is 3 times higher than the capacity of the highly regarded ASI1600. Even bright stars won’t saturate under long exposures. This also means that this camera can achieve higher SNR (signal to noise ratio) with just one single exposure.

Reliable Mechanics

ASI294MC Pro has the 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 well 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).294QE

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. ASI294MC Pro Dark Frame

294 DarkCurrent VS T

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 (12bit, 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

Thanks to the two-stage TEC cooling, ASI294MC Pro can lower the CMOS sensor temperature to 35-40 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35-40℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would also decrease. 
Please notice that the camera needs to be connected to an external 11-15v power supply to implement the cooling function. We recommend you use 12V@3A DC adapter (5.5*2.1mm, center pole positive) or lithium battery with 11-15V to power the camera. If you don’t have one, please click here to buy a 12V power adapter. There are 4 different standards  for different countries, please make sure you selected the correct adapter when placing the order.

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

Mechanical Diagram


What is in the box?

ASI294 Pro box includes all necessary cables, adapters, and manuals.


Spacer thickness: 0.1mm *1+0.2mm *2+0.5mm *1

The best solution of 55mm back focus length

Cooled Color Camera solutionCooled Color Camera with OAG solutionRead more: https://astronomy-imaging-camera.com/tutorials/best-back-focus-length-solutions-55mm

Q & A: 

1. I noticed amp glow present on the corners of my dark frames,  how should I remove it?

Please don’t worry about that. The amp glow is pretty normal actually. You may learn “What is Amp glow and how do I manage it?” here: https://astronomy-imaging-camera.com/faq

2.  I’ve heard there might be strange patterns on some ASI294MC Pro stretched images, does this mean the camera is defective?

NO, it is not a defect, and it is just a characteristic of the sensor. The pattern calibrates out of the light image with proper flat frames. A proper flat frame is a capture using an evenly illuminated light source, dimmed down to achieve an average ADU value of 24,000 (this is up to the user and their setup – recommended the histogram peak at 1/3 to 1/2 from the left, as shown in the figure below), a 5-second exposure, captured with the same gain and focus point as the light frames.

flat frame

Product review:


Please notice that the camera needs to be connected to an external DC 12V @3A~5A power supply adapter for use (connector 5.5*2.1mm, center pole positive). If you don’t have one, click here to buy a 12V power adapter. There are 4 different standards for different countries, make sure you selected the correct adapter when placing the order.
Or you can also use lithium battery with 11-15V to power the camera.
Just be aware that power supplies out of this range might cause irreversible damages to your camera.

Camera technical details

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
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: 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

more resolutions are in software, support customize resolution.

Our website is continuously updated with the most recent camera drivers as well as software for DSO and planetary imaging. Please make sure the most recent Driver and software have been installed before you start shooting:

It is also recommended to read the Manuals first before shooting.

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ZWO ASI294MC Pro (color)

KD 309.00