ZWO ASI 183MM-Pro USB 3.0 Cooled Mono Camera
ZWO ASI 183MM-Pro USB 3.0 Cooled Mono CameraZWO ASI 183MM-Pro USB 3.0 Cooled Mono CameraZWO ASI 183MM-Pro USB 3.0 Cooled Mono Camera

ZWO ASI 183MM-Pro USB 3.0 Cooled Mono Camera

  (3 Reviews)
✓ 2 year warranty


1x in stock shipped 1-2 working days

About this product

Model:  zwo_asi183mm-pro
Part Number:  ZWO ASI183MM-P

Features the Sony IMX183 20mp sensor with peak Q.E. at 84% & 2-stage TEC cooling. 

Regulated, two-stage, TEC cooling cools to 40-45 degrees below ambient temperature. 

The ASI183MC-Pro is fitted with Sony's highly sensitive 20mp (5496x3672) BSI IMX183 sensor with amp glow reduction and incredibly low read noise. 


  • Sony IMX183 Sensor
  • 256MB DDR3 Memory Buffer
  • Regulated two-stage Tec-Cooling: 40-45 degree below ambient temperature
  • Extremely low read noise - 1.6e @30db gain
  • 12Bit ADC - provides real 12bit dynamic range
  • Electronic shutter - no issues with vibrations sometimes found in mechanical shutters
  • USB3.0 Port (back compatible with USB2.0) - 19fps@5496x3672  308fps@320X240
  • AR coated protective window - all light can pass
  • Compatible with Windows / Mac OS / Linux

IMX183 Sensor

13.2mm x 8.8mm, 15.86mm diagonal, approximately 20.18 megapixels. 

Back illuminated, high sensitivity with 2.4μm pixels.

DDR Memory Buffer

ZWO Pro cameras feature a 256MB DDR3 memory buffer to improve data transfer stability and reduce amp-glow issues caused by slow data transfer speed when using a USB2.0 port. 

All ZWO cameras include a 2-year warranty. 

Camera Field of View Simulator

Astrophotography Performance

Very large 15000e full well capacity, 1.6e read noise @ 30DB and 12stops dynamic range @ Gain=0.  Utilise modern firmware design to minimise amplifier glow. 

Reliable Mechanics

ZWO's ASI183 Pro has the same mechanics as their ASI1600 Pro.  Four screws seal the sensor chamber.  The design has been extensively tested and is very stable.

Even when used in high humidity the ASI183 Pro will work fine, without dew problems.

High Speed

Fast FPS can be used for solar and lunar imaging, also for live viewing/EAA.  The high speed readout is suitable for real-time focusing, true 'lucky' imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and more.

10Bit ADC

  • 5496×3672    19fps
  • 3840×2160    41.04fps
  • 1920×1080    80.10fps
  • 1280×720      117.30fps

12bit ADC    

  • 5496×3672    19fps
  • 3840×2160    36.12fps
  • 1920×1080    70.48fps
  • 1280×720      103.23fps

High QE

Sony’s back-illuminated Exmor R technology delivers excellent Deep Sky performance.  QE peaks at a remarkable 84%.  In the Ha channel, QE is still over 60%.

Having high QE means more of the light entering your telescope is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 enhances signal quality.

Dark Current

The dark current of the ASI183 is extremely low, based on ZWO test results.

USB Ports

USB 3.0 Port: Provides 5Gb bandwidth making it possible to run the ASI183 Pro at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(20.18Mega).

Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive).  Also suitable: DC battery with 9-15V.

A 9-15V battery is also suitable for the cooler power supply.

USB 2.0 HUB: Can connect various accessories, such as a filter wheel, guide camera and electronic focuser, for easier cable management.  The USB Hub draws power from an external power supply if you have one connected. Two short 0.5m USB2.0 cables are included. 

ASI183MM-Pro Cooling

The ASI183 Pro has a 2-stage TEC cooling system that enables deep cooling (40°C-45°C below ambient). The cooler requires an external power supply - not included with the camera.

ASI183MM-Pro System Diagram

  1. M43-T2 adapter 
  2. EOS-T2 adapter 
  3. 2” Filter (optional)
  4. 1.25” T-Mount 
  5. 1.25” Filter (optional)
  6. M42-1.25” Filter (optional)
  7. T2 extender 11mm
  8. M42-M48 extender 16.5mm
  9. T2-T2 adapter
  10. EFW mini
  11. EOS adapter for EFW

ASI183MM-Pro Mechanical Drawing


What's in the box

  • ASI183MM-Pro Camera
  • Soft Padded Case
  • T2-1.25" Nosepiece Adapter
  • 1.25" Cap
  • 2" Cap
  • 2-metre USB 3.0 Cable
  • USB 2.0 Short Cable x2
  • T2-1.25" Adapter
  • T2 Extender 21mm
  • T2 Extender 11mm
  • T2-M48 16.5mm Extender
  • Spacers x2
  • Quick Start Guide
  • Driver CD


Sensor 1″ CMOS IMX183CLK-J/CQJ-J
Diagonal 15.9mm
Resolution 20.18Mega Pixels 5496*3672
Pixel Size 2.4μm
Bayer Pattern None
Shutter Rolling shutter
Exposure Range 32µs-2000s
ROI Supported
Read Noise 1.6e @30db gain
QE peak 84%
Full well 15ke
ADC 12bit
DDRIII Buffer 256MB
Interface USB3.0/USB2.0
Adaptor M42X0.75
Protect window AR window
Dimensions 78mm Diameter
Weight 410g
Back Focus Distance 6.5mm
Cooling Regulated Two Stage TEC
Delta T 40°C-45°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%


Supported Resolutions:

10Bit ADC

  • 5496×3672 19fps
  • 3840×2160 41.04fps
  • 1920×1080 80.10fps
  • 1280×720 117.30fps
  • 640×480 169.92fps
  • 320×240 308.17fps

12bit ADC

  • 5496×3672 19fps
  • 3840×2160 36.12fps
  • 1920×1080 70.48fps
  • 1280×720 103.23fps
  • 640×480 149.53fps
  • 320×240 271.19fps

Additional resolutions can be user defined.

Downloads / Manuals

The following manuals and downloads are available for this product:


ZWO Software and Drivers


Customer reviews

Average Rating (3 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Great match for the Stellamira 90mm Triplet
17 December 2021  | 

After lots of help from the team at FLO on what camera to upgrade to from a modded dslr I went mono and so glad I did, this is a great match for their Stellamira 90mm triplet. Arrived next day and that night was clear ! Got an hours worth of data on M33 but only luminace as I hadn't ordered any filters. The final stacked image was great so much more detail and a lot less noise than my dslr. Can't wait to add some colour to the image with this camera.

Rating (max 5):  
Excellent camera.
28 September 2020  | 

As most of astrophotographers I've started with DSLR,than graduated to OSC and finally move to mono imaging. What a difference in therm of sensitivity. Absolutely amazing.Very low noise. Only word of caution here - because very small pixel size you are required to paired it with quality optics. Very happy with results.

Rating (max 5):  
Outstanding with a small refractor
31 March 2018  | 

I have used quite a variety of cameras over the years but this one has to be amongst the best. It is very sensitive (I have been getting very promising early results with an ear type approach with 15s subs and total integration of less than 10 minutes on arp galaxies) and the small pixel size plays very well with wide field refractors in the 500mm fl type class.
The quality of the camera is good and I would wholeheartedly recomment it.


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