ZWO ASI 183 Pro Cooled Color CMOS Telescope Camera

  • Pixel Array: 5496 x 3672.
  • Great for planetary and deep space imaging.
  • Sony back-illuminated CMOS sensor.
  • Extremely low noise with 12 stops dynamic range.
  • 20.2 megapixels (5496 x 3672 with 2.4-micron pixels).
  • Color and monochrome options available.
  • Cooled and non-cooled options available.
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  • Regular price $899.00
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ZWO ASI 183 Pro Cooled Color CMOS Telescope Camera

As a deep space camera, the ASI 183 is incredibly efficient. It can be cooled to temperatures 45 degrees Centigrade below the ambient temperature bringing thermal noise buildup down to a minimum. You can take pictures up to 33 minutes with this camera, but with a read noise of 1.6 to 3.7 electrons (depending on gain settings), exposures that long are rarely needed. When shooting deep space images at full resolution this camera pairs exceptionally well with telescopes 300 mm to 600 mm in focal length, and when binned 2 x 2, it pairs well with telescopes 1,000 mm to 1,500 mm in focal length.


As a planetary and solar camera, the ASI183 is exceptional. For solar imaging, this camera can record full 20.2 mp videos at 19 frames per second and capture the entire sun with a 1350 mm focal length! If you’re interested in speed shooting planets like Jupiter and Saturn, the ASI 183 clocks out at 308.17 frames per second at 320x240 resolution!


The ASI183 Specifications at a Glance



The Sony IMX183CQJ-J CMOS Sensor offers a higher resolution, high quantum efficiency and which just as efficient signal to noise ratios as it's older brother the ASI 1600. These sensors can record 20.2-megapixel video at 19 frames per second, which is 48% more resolution than Ultra High Definition 4k video! These sensors offer 12 stops of dynamic range when the gain settings are at 0 and offer a low read noise 1.6 electrons when the gain is set at 30 DB. The size of the sensor is approximately 15.9 mm, the same size as most Micro Four Thirds cameras. The sensor is also back-illuminated for higher QE.



The ASI 183 is very efficient when it comes to light gathering. The camera has a peak of EQ 84%! The H-alpha emission line is recorded at 60% and doesn't record less than 50% in the visible spectrum.



The ASI 183 is fast, which gives it the ability to focus on real-time and get the most data possible for your solar and planetary imaging setups.

10Bit ADC
5496 x 3672 19fps
3840 x 2160 41.04fps
1920 x 1080 80.10fps
1280 x 720 117.30fps
640 x 480 169.92fps
320 x 240 308.17fp

12Bit ADC
5496 x 3672 19fps
3840 x 2160 36.12fps
1920 x 1080 70.48fps
1280 x 720 103.23fps
640 x 480 149.53fps
320 x 240 271.19fps


ADC12 bit
Back focus6.5mm
Camera ConnectionM42x0.75
Color or MonoColor
Color or MonoMonochrome
Delta T45°C Below Ambient
Dynamic Range12 Stops
Free ShippingYes
Full Rez Frame Rate19fps
Full Well15ke
Max Frame Rate308.17fps
Mega Pixels20.2 mp
Peak QE84%
Pixel Array5496 x 3672
Pixel Size2.4 microns
Power Consumption12V 3A max
Read Noise3e
Sensor Diagonal15.9mm
Sensor TypeCMOS
SensorSony IMX183CQJ_J
Weight0.9 lbs


What Is In The Box


Customer Reviews

4.2 Based on 5 Reviews
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Richard W.

ZWO ASI 183 PRO paired with the 9" RASA

The camera worked very well, first night paired with a 7 Mak/Cas f/15... gave excellent images of Jupiter and Saturn. This seems close to 400x so it was really pushing the scope. I tried a few DSOs but wasn't thrilled with the results. Skies were not good and half moon. Although, M22 was edge to edge amazing. 8-9-19 cooled to -10C. Night two, after midnight, paired with the 8" RASA on a HDX 110 mount ... I was amazed to get M31 edge to edge ... in 120 seconds ... amazing! M27 was bright green and in just 60 seconds, m57 was small but resolved perfectly at 90 seconds. The real test ... M33 at 90 seconds was fully resolved. 8-10-19 cooled to -10C. My first impressions are that the 183 works OK for planetary on large slow scopes if the skies are near perfect and this camera is a perfect match for use with the 8" RASA at f/2. ... add the slide filter! I will test on my 6" f/8 refractor next ... 120mm f/5 as well. I am betting this camera will be well suited for them.

United States

Sales rep was awesome.

Sales guy worked a major deal with me. He kept me posted on the status of the order and the shipment as well.


buy with bad luck

The attention was excellent but the article arrived broken to my address, and I still could not use it. I already made the claim and I'm waiting for an answer

Robert Y.

Excellent small pixel camera.

Make sure you are looking for a camera with small pixels. If that is what you are looking for then this is a great camera. I have used it for several months and have had excellent results. If you are trying to use the camera with a larger scope, the pixel scale will quickly get ridiculously small. I have used this with LX200ACF 12", but with scale of .16 it becomes challenging and you need a good mount and excellent tracking. Perfectly suited to smaller scopes and wide field imaging. I've really enjoyed using this camera.

Terrance H.
United States

Love OPT , do not like the asi 183.

My experience was low contrast, highly bloated stars and just overall poor performance.