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Have a question? We'd love to help. Email: Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

ZWO ASI533MM Pro USB3.0 Cooled Monochrome Camera (ASI533MM-P)

by ZWO
Original price $1,399.00 - Original price $1,399.00
Original price
$1,399.00 - $1,399.00
Current price $1,399.00

Product is not in stock at the moment but we expect it to arrive soon.

New stock is arriving all the time. We will let you know an estimated timeline for when your reserved item will arrive.

Important: For the following imaging camera models, please use a separate 12V power supply rather than the power hub in the ASIAIR Pro as the hub cannot provide enough amperage to power the camera's TEC coolers: ASI6200, ASI2600, ASI2400, ASI533, ASI071MC

The ASI533MC PRO adopts a Sony back-illuminated IMX533 sensor, which is a 1 inch square frame sensor made suitable for deep sky astrophotography needs. The ASI533MM Pro can be regarded as an upgrade of the ASI183 series.


Not only does it retain the high-quality features of the ASI183, such as high QE and high frame rate, it also features no amp glow, readout noise as low as 1.0e, pixel size of 3.76 um and a 2-stage TEC cooling. It is highly recommended for beginners of deep sky astrophotography.

IMX533 backlit sensor

Sony’s back-illuminated CMOS image sensor improves sensitivity and noise reduction – the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained the advantages of CMOS image sensors such as low power consumption and high-speed operation.

With a conventional front-illumination structure, the metal wiring and transistors on the surface of the silicon substrate that form the sensor’s light-sensitive area (photo-diode) impede photon gathering carried out by the on-chip lens. A back-illuminated structure minimizes the degradation of sensitivity to optical angle response, while also increasing the amount of light that enters each pixel due to the lack of obstacles such as metal wiring and transistors that have been moved to the reverse of the silicon substrate.

Sony has newly developed a unique photo-diode structure and on-chip lens optimized for back-illuminated structures, that achieves a higher sensitivity and a lower random noise without light by reducing noise, dark current and defect pixels compared to the conventional front-illuminated structure.

Traditional CMOS sensors produce a weak infrared light source during operation quite often seen in the corner of uncalibrated images as the tell tale signs of ‘amp glow’. As the ASI533MM PRO uses zero amp glow circuitry, you won’t have to worry about amp glow even when using high gain, long exposure imaging.

Note: We recommend using an external 12V power supply to power the camera instead of USB 3.0/2.0 only

As you would expect this latest generation camera not only retains key features of the ASI183 series such as an attractive QE figure, high frame rate and along with other excellent characteristics of the ASI183 cameras, but also now includes new and improved features such as zero amp glow, extreme low read out noise (as low as 1.0e), 3.76 microns pixel size and an improved 2 stage TEC cooler giving enhanced cooling capabilities.

Quick Overview

  • 1” square sensor
  • The IMX533 is a 1-inch, 9MP CMOS image sensor in a square format with a 3.76 um pixel size, capable of producing frames at 20 frames/sec in 14bit mode.
  • Read out noise is as low as 1.0e which makes it comparable to SCMOS or EMCCD sensors and highly suitable for high definition, low noise imaging.
  • IMX533 backlit sensor
  • Zero amp glow
  • Low read-out noise, high dynamic range


Camera technical details
Sensor: Sony-IMX533CLK-D
Diagonal: 15.968mm
Resolution: 9 Mega Pixel 3008*3008
Pixel Size: 3.76μm
Max FPS at full resolution: 20fps
Shutter: Rolling shutter
Exposure Range: 32μs-2000s
ROI: Supported
Read Noise: 1.0-3.8e
QE peak: 91%
Full well: 50000e
Interface: USB 3.0 Type-B
Adaptor: M42X0.75
Protect window: D32-2-AR
Dimensions: 78mm Diameter
Weight: 470g
Back Focus Distance: 17.5mm
Delta T: 30°C-35°C below ambient
Camera Power consumption: 650mA at 5V
Cooler Power consumption: 12V at 3A Max
Working Temperature: -5°C—50°C
Storage Temperature: -10°C—60°C
Working Relative Humidity: 0%—80%
Storage Relative Humidity: 20%—95%
Max FPS at full resolution:
14Bit ADC
3008×3008 19.88fps
1920×1080 54.11fps
1280×720 79.74fps
640×480 116.55ps
320×240 216.45fps
more resolutions are in software, support customize resolution.

Customer Reviews

Based on 2 reviews
David Van Blarcom
ASI533mm Pro - Great!

I had been looking forward to trying the ASI533mm Pro mono camera because I have been so impressed with the ASI533mc Pro (One Shot Colour). I’ll be looking forward to trying it with the Antlia 3nm SHO filters also purchased from All-Star, once summer nebulae and clear skies permit. In the meantime, just one image over 2 nights with of M13 with LRGB, and the result has been fantastic. While I have had a lot of great images from the ASI1600mm, I think the ASI533mm will replace it - smaller sensor, but much better specs. It also doesn’t hurt that it can use the less expensive and more convenient 1.25 mounted filters, instead of the 31mm unmounted filters required by the ASI1600 in my faster system.

Same great performance as the MC!

What can I say? I switched from the 533MC to this mono cam. Same incredible sensitivity. I love the square sensor
No issues cooling to spec, though I don't go that far. No amp glow as stated, so you may find you don't even need dark frames! I've attached my first attempt at monochrome imaging (I'm by no means an expert and this was only three hours under Bortle 6 skies.)