ASI224MC (color)


ASI224MC has a 1/3″ and 1.2M pixels sensor IMX224 with SONY Exmor and  NIR Technology.

Version: 1.3 (include Anti-amp glow function)

Extremely low read noise (0.75e – 1.5 e) and high sensitivity especially in IR range
Very suitable for astronomy and microscopy photograph

SKU: ASI224MC Categories: ,

Product Description

ASI224MC has a 1/3″ and 1.2M pixels sensor IMX224 with SONY Exmor and NIR Technology.
Extremely low read noise (1.5 e) and high sensitivity especially in IR range.

Very suitable for astronomy planetary and small DSO imaging


PCB Version1.3 (include Anti-amp glow function)

Most sensor will have amp-glow problem only if you do long-time exposure capture, such as longer than 1s.

We apply “amp glow reduction technology” to our ASI224MC and ASI224MC-C camera, it is a hardware modification to reduce the amp-glow of the sensor, not every sensor can benefit from this modification, but it is obvious for ASI224MC, so this upgrade is for ASI224MC  and ASI224MC-C only .

We made this change since April 2016, which means the current unit (ASI224MC and ASI224MC-C) we produce all equiped with the newest PCB version —V1.3.




Relative QE Curve, we estimate the Peak Value should between 75%-80%


Super Low Read Noise less than 1e which can compare with sCMOS or EMCCD sensors

224 Gain RN DR FW vs gain

What`s in the box?




Mechanical Drawing




Camera technical details

Sensor: 1/3” CMOS IMX224/IMX225
Resolution: 1.2Mega Pixels 1304X976
Pixel Size: 3.75µm
Sensor Size: 4.8mm*3.6mm
Diagonal: 6.09mm
Exposure Range: 32µs-1000s
ROI: Supported
Binning: 2×2 binning supported
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
Dimensions: 62 mm Diameter
Working Temperature: -5°C—45°C
Storage Temperature: -20°C—60°C
Working Relative Humidity: 20%—80%
Storage Relative Humidity: 20%—95%

Supported resolution

10bit ADC / 12bit ADC
1304×976 150fps / 64fps
1280×960 152.4fps / 65fps
800×600 241.2fps / 102.9fps
640×480 299.4fps / 127.6fps
320×240 577.9fps / 256.4fps
More resolutions can be user defined

Before first usage of this product read manuals and install correct drivers and software.


  • Fast Shipping(amount ≧ 299USD) for free
  • Fast Shipping(amount < 299USD) : $20.00
  • Free Shipping(amount < 299USD) (Air Mail, 3-4 weeks) (Free)


  1. Fast Shipping: we will choose DHL, UPS, TNT, EMS etc to deliver it. Usually you will get your package in one week. We provide free fast shipping for order ≧ $299 or charge extra $20 for order < $299.
  2. Free Shipping: we will ship via DGM or China Post Registered Air Mail. It usually costs 2-3 weeks to reach US or Europe and costs 3-4 weeks to reach far places.
  3. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  4. Customers from Russia need to provide the name of your company.

Tracking site:


China air mail:


  • The price list on our website is USD without tax.
  • Please note that buyers areliable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free or replace for free if the camera doesn’t work within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis.
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement
  • If you get a faulty camera, please contact us as soon as possible though email: Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.

Do you have uestion, answer or comment? Post here!

  1. (verified owner):

    What’s included in the package?

    • Sam Wen


      it includes
      Camera body+2.1mm lens
      1.25″ T thread adapter
      2 meters USB3.0 cable
      2 meters ST4 cable

  2. :

    Can it output RAW image without any ISP processing?

    • Sam Wen


      yes, it output raw data without any processing

  3. (verified owner):

    Driver was installed but Fire Capture 2.4 does not view the camera. Why? ASI 174 working without problems.

  4. :

    What would be most suitable for DSO’s: 224MC, 178MC or 185MC? I have a 120MC and even thought it is a planetary ccs, I had some decent DSO’s captures… Would you think it is a worth upgrade? Additionally, in terms of FOV, how much area each of this CCD’s cover, in comparison to the 120MC?

    • Sam Wen


      for DSO, waiting for our cooled cameras 😉

  5. :

    What would be the best IR pass filter to use with this – a 742nm or 807nm?

    Also, even with version FC2.4, Firecapture does not find the camera. Works with Sharpcap 2.6 though.

    • Sam Wen


      you need FC 2.4.11 to work with ASI224 ASI185 ASI178
      so the easiest way is to download FC again
      for IR pass filter, I think 742nm would be better for most target

  6. :

    How well does the 224MC perform as an autoguider, as good or better than the 120MC? And how well is it suited for off a thin off axis setup on a Celestron EdgeHD 8: SCT?

    • Sam Wen


      224 is very sensitive and super low read noise
      so it’s second to none suitable for this off axis guider job

  7. :

    When can we expect to see the cooled version of this camera for sale? And any rough estimate on pricing?

    • Sam Wen


      we hope to release on Oct
      the price range would be around $600-$700

  8. (verified owner):

    Could you please tell me what kinds of parameters you can adjust? I wonder if you can control exposure time, analog gain, digital gain. Also it is in stock now?

    • Sam Wen


      yes, you can adjust exposure gain and offset gamma
      all parameters related to sensor can be adjusted in software, it’s instock now

  9. (verified owner):

    Could you please note the spec of the default lens? What are the FOV, f-number and focal length? And do you provide an adapter for M12 mount lenses?

    • Sam Wen


      the focal length is 2.1mm, f-number is f2.0
      FOV is 151 degree for 1/3″ sensor
      there are lots of M12 to CS adapter on market
      you can easily get it

  10. :

    How is the cooled version of the 224c coming along…close to release?

    • Sam Wen


      it will come at the end of this month or start of next month

  11. :

    Which of the coming cooled cameras will be more suitable for both planets and DSO? Can you advance any features?

    • Sam Wen


      I think cooled ASI174 is the best for its nearly 1″ format

  12. :


    With my ASI120MC it had a protective window with IR.
    Would a UV/IR Cut / L-Filter with LPFC be OK to use with this instead of just a IR filter without the UR ?
    Using with skymax 127 and just planetary imaging.

    • Sam Wen


      usually L filter is OK too, UV won’t be a problem

  13. :

    Is this the camera Damian Peach is now using for most of his planetary work or is he using a mono version?

    • Sam Wen


      he is using the color version 😉
      there is no mono version of 224
      but there is mono version of 290 which is very close to each other

  14. (verified owner):

    What is the distance in mm from the focal plane of the camera to the front of the included 1.25″ nose piece where I would thread a 1.25″ focal reducer?

    • Sam Wen


      the distance is 12.5+29=41.5mm

  15. :

    hello I have a Dobsonian 300/1500 , could you tell me that camera is best suited for global , moon and occasionally deep sky images, I hesitate between the 224mc and 290mc. My telescope is on equatorial table . thank you

    • Sam Wen


      I think you can choose 290mc if you prefer moon or solar and DSO
      because the 290mc’s resolution is higher and nearly same sensetive

  16. :

    Hi !

    I have an ASI224MC, and I am going to buy a new Laptop.

    Does the Driver for this ZWO Camera work with Windows Home 10 ?
    If not, which version of Windows do I need ?

    What about the future for Windows 10 versions ?

    Best Regards
    Erik Norman

    • Sam Wen


      Yes, All ASI cameras support windows 10

  17. (verified owner):

    Is this item in stock? What is the estimated delivery time?

    • :

      Hi Bradley
      Yes, we have it in stock now, can be shipped at the end of this week.

  18. :


    for an order for France , how you declare the parcel ? is there a fee to pay? How long for the delivery?


    • :

      Hi Emmanuel
      The camera does’t inlude any tax, you may still have to pay the import duties, and if you order now, the camera be shipped next week.
      It will reach you proabbly in one week.

  19. :


    I’m considering the 224mc, but I have some doubts:

    -I’ll use it mainly for planetary work, as I already have a cooled CCD for deep sky. My configurations will be: an APO 80mm, F6.0 refractor. Using a 2X barlow lens this will give a 0.8 arcsec/pixel, maybe too high for planetary. The other config will be a 8″ SCT F10, giving a 0.39 arcsec/pixel, or half this with the barlow lens. Do you thin the 22mc is the camera to go?

    -I’ll use it both for planets and Moon. I would like to have the best of both worlds, and I don’t know if the best option would be the 174 instead.

    -Finally, … is there any (technical) reason why the fish-eye lens is not included for the 224? :-)

    Thanks a lot and regards


  20. (verified owner):

    WARN! This camera is not supported by Windows 10!

    • Sam Wen


      yes, all windows platform supported

  21. :

    Would the 224mc be better for auto guiding than the 120mm? I want to do dso with 1600 .

    • Sam Wen


      290MM is the best

  22. :

    What is better camera for planetary imaging, ASI224 or ASI290?

    • Sam Wen


      choose 290 for mono and 224 for color

  23. :

    When I first plugged the camera into my computer a window popped up saying “installing proper software” or something like that. I accidentally closed the tab, and now whenever I plug the camera into my computer, nothing happens. What did I do?

    • Sam Wen


      please install the driver at first
      you can also manual update the driver in “device manager”

  24. :

    Hi, what is the maximum QE for the 224?

    • Sam Wen


      around 80%

  25. :

  26. :

    is this product available now?

    • Sam Wen



  27. :

    Hi, does this camera work with an Apple Mac? If so, what software is required or can I use for the images? Thanks

  28. :

    Can I use this camera for UV and IR photographing?

    • Sam Wen


      yes, just UV is not very sensitive

  29. :

    With the 1.25 adapter screwed in, what is the distance from the CCD chip to the end of the adapter? I’m trying to figure out adapter spacing for reducers.

    • Sam Wen


      the length of the nosepiece is around 24mm, the back focus distance of 224 is 12.5mm
      so total 36.5mm

  30. :

    Forget the question, should have read first :(

  31. :

    To a C9.25 telescope that camera is better 224mc or 290mc?

    • Sam Wen


      290 has higher resolution, so it depends on your imaging target
      290 more suitable for moon or sun

  32. :

    I just received my ASI224MC and will be using it for planetary and bright DSOs. For DSOs I want to use the autoguider port (as FireCapture only autoguides for planets). How do I select the guide star, or does it automatically lock onto a bright star?

    • Sam Wen


      that’s not possible, because 224mc is blind when do long time exposure

  33. :

    Will either the D21 or D25 IR-cut protect windows work with the ASI224mc?

    • Sam Wen


      you need D21 protect window

  34. :

    Will it be in stock again? TnX!

    • Sam Wen


      it’s in stock now

  35. :

    Hi. Can you give a description of the new amp glow reduction capability? How effective is it? At what exposure length does it start working? How can I tell whether I am getting the latest version of the camera that has it?

    • Sam Wen


      it is always on, the PCB version is V1.3
      I think the reduction is better than our competitor

  36. :

    Hi Sam,
    I am aware that the ASI224MC is an USB 3.0 camera, but is it downward compatible to USB 2.0 and what frame rates are to be expected with USB 2.0?

    • Sam Wen


      yes, compitable with usb2.0

  37. :

    Do I need a UV/IR filter with this camera? Or does it have an IR cut filter included?

    • Sam Wen


      yes, you need one extra 1.25″ UV/IR CUT filter

  38. :

    If I buy it now, will I get the PCB V1.3 model?

    • Sam Wen


      yes, all camera in stock use the newest version

  39. :

    Can we take good moon shots with this camera. Plan to mainly use it for planetary and lunar.

    • Sam Wen


      of course you can, even DSO imaging

  40. :

    Dear ZWO,

    During a cleaning process I accidentally broke the round glass that protects the sensor. Where can I find it to buy?

    I own a asi178mc-C also and the glass looks the same, but just in case the camera I broke the glass is a asi224mc.

    Thanks in advance.

  41. (verified owner):

    Hi. The camera only has an AR window so lets in unwanted IR light. Does this cause much of a problem? Can the user replace the AR protect filter for an IR cut filter (ZWO D21) or does this change have to be done by ZWO? I will be connecting the camera on the T-threads so can’t add in the IR cut filter as a 1.25-inch mounted filter.

    • Sam Wen


      you can do it by yourself to replace the AR window
      camera can provide one better color image at daytime if you add one IR CUT window

  42. :

    Will this cam work on 2011 MacBook pro? I can use thunderbolt to usb 3 connection if I need to but MacBook has usb 2 wondering what camera will work with MacBook pro 2011 with USB 2 or do I need to but thunderbolt to USB 3 adapter?

    • Sam Wen


      yes, it can work when you connect though USB2.0

  43. :

    How to use UV IR Cut Filter?
    Just attach the filter to the nosepiece? OR replace the AR window with UV IR cut filter?
    which way is better?

    • Sean Wang


      Hi Phurich
      Best way is attach it on the nosepiece.

  44. :

    Hi. I have a celestron c8 advanced vx and want camera for dso and planetary images. What camera can you recomand from all your cameras? 224mc 174mm-cool or 290mm-cool. Thanks for your perfect job!

    • Sean Wang


      Hi Aivar
      We saw may users using C8 or c11 to do DSO lucky imaging( using short time and stack more) . So we suggest using 224mc as the most economical method.
      If you want better result, I think 290mm-cool will be better.

    • Sam Wen


      we would recommend ASI1600 for DSO imaging
      maybe 290mm-cool is good if you prefer one of them

  45. :

    I have a 8″ Dob (f5.9) with a EQ platform. Looking to get into astrophotography. Guys at my club like the 224. For my set up what do you recommend? 185, 224, or 290? With my setup I assume I will mostly be doing planetary and lunar. Possibly some DSO. Thanks for your recommendation.

    • Sean Wang


      We recommand 224mc and 290mm+EFWmini, 224mc is easy to use, 290mm is have better performance and high price. It’s all suitable for you.

  46. :

    Hi, I have a Celestron Powerseeker 80EQ. Will this model be compatible with the camera?

    • Sam Wen


      yes, of course

  47. :

    ASI 224MC spec says working temperature minimum is -5C. Surely it can work at a lower temperature than that. What happens below that temperature?

    • Sam Wen


      just use it if it works
      sometimes camera cannot be stared at very low temperature

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