ASI 290MC-Cool (color)


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SKU: ASI290MC-C Category:

Product Description

Alternative Product




Diagonal 6.46 mm (Type 1/2.8) Square Pixel Array Color CMOS Image Sensor

Back-Illuminated CMOS image Sensors with Improved Visible Light and Near Infrared Sensitivity that Support 1080p

Sony has developed the approx. 2.13M effective pixel back-illuminated CMOS image sensors IMX290LQR and IMX291LQR with improved sensitivity in the visible-light and near infrared light regions for industrial applications.
A new 2.9 µm-square unit pixel has been developed that combines a back-illuminated structure with technology for improving near infrared sensitivity to further enhance picture quality at low illumination while at the same time realizing Full HD cameras for industrial applications. This realizes two or more times the sensitivity in the visible-light region and three or more times the sensitivity in the near infrared light region than that of the existing Sony product (IMX236LQJ).

relative QE Curve


Read Noise

290 readnoise

This camera can run without external power supply in normal mode

here is a 60s dark frame

we recommends 12V at 2.5A or more DC adapter for cooler power supply(2.1*5.5, center passitive)


What`s in the box?


Notice:Cooled cameras need a 12v power adapter, If you don’t have one, please click this link to buy a 12V power adapter. There are 4 different standard for different contury, please choose it carefully.

Drivers and Softwares:

Our website has newest camera drivers and many DSO and Planetary capture softwares. Please make sure the newest driver and software has been installed before you start shooting:


New accessory

And the anti-dew heater  is on sale that could solve the dew problem on the front window  for  ASI cooled cameras.


You can buy the heater from the link:


ASI Cooled Cameras 3ASI Cooled Cameras 5ASI Cooled Cameras 6ASI Cooled Cameras 7ASI Cooled Cameras 8ASI Cooled Cameras 9ASI Cooled Cameras 10ASI Cooled Cameras 11ASI Cooled Cameras 12ASI Cooled Cameras 16




Sensor: 1/2.8″ CMOS IMX290/IMX291
Resolution: 2.1Mega Pixels 1936×1096
Pixel Size: 2.9µm
Exposure Range: 32µs-2000s
Interface: USB3.0/USB2.0
ADC: 12bit
Dimension: 78 mm Diameter
Weight: 410g
Back Focus Distance: 17.5mm
Protect Window: AR coated
Cooling: Regulated Two Stage TEC
Delta T: 35-40 degrees C
Cooler Power consumption: 12V at 2A Max

Supported resolution

1936×1096: 20.4
1280×960: 35.3
640×480: 141.5
320×240: 355.9
2X2Bin :968×548: 20.4

USB3.0 MAX FPS(12bit/10bit)
1936×1096: 82.2/170
1280×960: 93.6/193.9
640×480: 184/381.2
320×240: 355.9/737.5
2X2Bin :968×548: 82.2/170

More resolutions can be user defined

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.


Fast Shipping: we will choose DHL, UPS, FedEx etc to deliver it. Usually you will get your package within 15-20 days.

  • Fast Shipping(amount ≧ 199USD) for free
  • Fast Shipping(amount < 199USD) : $30.00 (We do not provide free shipping from now on.)


  1. It will take around 60-90 days for shipment via ePacket/China Post Registered Air Mail/EMS, which can’t be guaranteed due to force majeure. If you can’t get the air mail package after 2months, please let us know ASAP:
  2. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  3. Customers from Russia need to provide the complete English name with three words as well as the English shipping address.

Tracking site


China air mail:



  • The price list on our website is USD without tax.
  • Please note that buyers are liable 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

1. ZWO hereby declares that it will provide customers with a warranty period of 2 years for ZWO branded products (excluding APO), as per this policy. APO products will be covered by a 1-year free warranty service, starting from the day following the receipt of the product by the customer. For ASIAIR Plus users, the warranty period will commence from the day of device activation.

Furthermore, ZWO will offer customers a 1-year free warranty service (Warranty Period) for Seestar branded products purchased from ZWO, in accordance with this policy. The warranty period will begin from the day following the receipt of the product by the customer.

2. If a User encounters the following Dead on Arrival (DOA) and contacts ZWO within the corresponding time limit to issue the Product purchase invoice and relevant evidence, ZWO will provide door-to-door pick-up service and, as appropriate, after-sale replacement (or partial replacement), repair or return (or partial return) service for the following Products:
1) Product quality problem
Provided that a User detects a quality problem and contacts ZWO within 30 days after receipt of the Products, and ZWO support team confirms that the Products indeed have a quality problem or defect after their inspection, ZWO will provide free replacement service towards such Products;
2) Product transportation problem
Provided that a User finds obvious signs of bubbling, serious overstocking, or deformation on the outer package of the Products upon receipt of the Products, and provides ZWO with pictures of the outer package and proof of receipt within 3 days after receipt of such Products, ZWO support team will verify the actual shipper and determine the responsible party for such transportation problem. In the event that ZWO is the actual shipper, ZWO will be responsible for providing the relevant return or replacement service, however, if the Products are directly sold or transported to the User by an agent of ZWO, the agent will be responsible for providing the relevant return or replacement service.

3. If the Products are under the following circumstances, they are not within the scope of warranty service, ZWO may provide maintenance services to the Users:
1) The Warranty Period of the Products has expired; or
2) The Products are injected into liquid or affected by moisture or corrosion; or
3) The Products are damaged by an external force (such as the broken of the camera protection window glass, the deformation of the product shell, the broken of the USB port, etc.); or
4) Disassembling, repairing by a third party, refurbishment of the Products (such as downloading erroneous firmware) without the written authorization of ZWO; or
5) The product system is modified, or the maintenance notice is lost or changed; or
6) Product quality problem caused by installation not following the requirements or instructions for the Products; or
7) Physical damage or failure of the Products caused by the force majeure (such as strong vibration or extrusion such as flood, fire, earthquake, or thunder stroke); or
8)Damage caused by the improper User operation during the period of shooting or use, such as using without the equipment protection or direct shooting of the sun; or
9) No valid purchase invoice or warranty certificate; or
10) The Products are second-hand products.
Any quality problem with the accessories or other parts of the Products is not a condition for the return or change of the Products, and the User may solely request to replace the accessories with new ones, which shall be handled after verification by ZWO support team.
If the issue with your ZWO product was caused by certain damage (such as severe damage not covered by the 2-year warranty), you might have to pay the replacement value.

4. For the normal repair or replacement of the Products during the Warranty Period, the User will bear the return cost. When returning the Products, Users shall specify the actual reasons for the damage to the Products, and shall provide the corresponding valid certificates, such as pictures or videos, etc.
For the Products that need to be replaced after being confirmed by ZWO in writing, the User shall return the Products with the complete package, together with all accessories, manuals, etc., to the address designated by ZWO.
By sending back the product to ZWO, the User agrees to pay out-of-warranty fees that may arise during the repair process of the product. ZWO will send back the product after charging.

5. If a User encounters any problem during the use of ZWO Products, you may at any time contact ZWO for technical support via ZWO Support.

For the Products that need to be returned for after-sales service, ZWO will provide the corresponding RMA code for reference.
ZWO will not accept any products having no RMA code that have been returned privately without ZWO written confirmation.

6. If a User purchases the ZWO Products from a ZWO agent, the User may contact the ZWO agent directly for the relevant after-sales service.

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

  1. Avatar


    Darn. Ok I’ll have to save up.


  2. Avatar


    Hey Sam! I was wondering what the best camera that creates clear high quality pictures of DSOs. The asi1600 is a bit much money. I wish the price was lower seeing all the amazing pictures taken with it. Anyways is there a camera that is extremely close to the 1600? Thank you!


    • Avatar


      1600 is the best DSO camera we have. there is not one can replace it.


  3. Avatar


    When I originally commented I clicked the “Notify me when new comments are added” checkbox and now eachtime a comment is added I get three emails with the same comment.Is there any way you can remove me from that se?ikcerThanvs a lot!


  4. Avatar

    (verified owner):

    Hi again, Sam

    I’ve had a moment to carefully take some darks and biases to compare with the performance curves on the camera website (the page people are looking at), and the dark you provided ( With the sensor at -20C I used SharpCap2.9 to record 20 60s frames at a gain setting of zero, gamma/brightness/red/blue sliders all at “50” (neutral), averaged these in “siril” (linux “IRIS”, basically), and displayed both FIT files side-by-side in “ds9”, using log scaling and pushing the contrast/brightness equally.

    Your dark is quite clean and shows very very little “amp-glow” and few hot pixels.
    My attempt to duplicate this (same gain and temperature etc) show significant amounts of both.

    Any comment? Specifically, amp-glow control in my camera seems not to be in effect.


    • Sam Wen


      sorry for my later reply
      did you check the std value of your image?
      maybe smaller than ours

      this is because you cool it deeper than us and the dark current is so small cannot cover the amp-glow
      so the amp-glow looks more obvious


  5. Avatar

    (verified owner):

    Hi Sam,
    I answered my own question when I checked the driver settings. The white balance was not set to neutral, and blue pixels in my images (whatever the source of their signal) were being emphasized. From the header, your posted dark was made at low gain (3.58 electrons/ADU), so it would look very clean. This corresponds to a slider gain setting of “0”, referring to the curves you provide on this webpage. Unity gain (1 e-/ADU) is “110”. For my tests the gain was set to a slider setting of “300”.

    So, please ignore my previous question.


    • Sam Wen


      got it 😉


  6. Avatar

    (verified owner):

    Hi Sam,
    MaximDL, -20C – thanks.

    I note you’ve posted the same 60s dark for both the 290MM and 290MC. Of course, it should make no difference because the Bayer filters are irrelevant for darks. However: I have the 290MC-Cool, and I’m using SharpCap2.9 (latest) and the ASCOM driver for the ASI290MC-Cool (latest) and RAW16 .SER sequences of darks recorded at -25C (no light whatsoever) show gridding/waffling exactly as if I was looking at one channel of a Bayer image in an appropriate viewer. They also show some ‘amp-glow’, more than your posted July dark (at -20C). (The FIT header of your dark is also somewhat confused, in that NAXIS1 and NAXIS2 are the size of a 290’s pixel array (1936, 1096), but XPIXSZ and YPIXSZ are
    the values for the IMX224 sensor’s pixels (3.750000000 microns); the 290’s are 2.90000 microns square.
    The header does not specify 290MM, 290MC, or in fact the sensor used at all)

    Am I missing something? Did you use a 290MM or 290MC to create the dark posted on both the ASI290MM-Cool and ASI290MC-Cool’s webpages (not that it should matter)? Should I suspect SharpCap2.9 in somehow introducing gridding into data that should not contain it?

    Could you please post a 60s dark created with (specifically) an ASI290MC-Cool, for comparison.


    • Sam Wen


      there is no difference for the dark file between color and mono
      the pixel size should be error of old software, but the newest version should already fixed it

      is the gain setting the same for you which is zero?


  7. Avatar

    (verified owner):


    Thanks for the 60s dark. What was the sensor temperature for this dark?
    What application was used to take the dark?


    • Sam Wen


      you can get from the fit header, ASCOM driver is used


  8. Avatar


    Astounding QE especially in the near-infrared. How is this camera for “amp-glow”?
    Is there a 60s dark you could share, for example?



    • Sam Wen


      just uploaded it
      you can find the link in the description


  9. Avatar


    Is the camera less sensitive than the asi224mc or its about the same ?


    • Sam Wen


      I think sensitivity is the same



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