ZWO - ASI676MC USB 3.0 Color CMOS Camera

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The ZWO ASI676MC stands out as an outstanding all-sky camera due to its square 1/1.6" Sony IMX676 sensor, boasting an impressive 12MP resolution of 3552x3552 pixels. This resolution is particularly noteworthy given the camera's compact size and affordability, making it a compelling choice for capturing complete sky images.

ZWO ASI676MC USB 3.0 Color CMOS Camera

ASI676MC USB 3.0 Color Camera Features

  • ZWO ASI676MC features a square 1/1.6" Sony IMX676 sensor with 12MP resolution (3552x3552 pixels).
  • Square sensor format simplifies mosaic image stitching and enhances compatibility with fisheye and wide-angle lenses.
  • Incorporates Sony's STARVIS 2 technology for increased sensitivity, high dynamic range, and lower noise.
  • Improved sensitivity in near infrared spectrum aids in all sky observations, especially for capturing details of the Milky Way that are hidden behind cosmis dust.
  • ZWO ensures absense from amp glow issues in the ASI676MC camera.
  • Utilizes USB 3.0 interface and 256MB DDR3 Memory for stable data transfer and avoiding frame dropping during long exposures.
  • Sony IMX676 sensor's QE peak of 83% ensures efficient photon to electron conversion, maintaining high SNR.
  • Low readout noise combined with HCG mode provides consistent dynamic range even at high gain settings.

Benefits of a Square 1/1.6" Sensor for All Sky Views

The ZWO ASI676MC stands out as an exceptional all-sky camera, mainly because it features a square 1/1.6" Sony IMX676 sensor which consists of an impressive 12mp resolution of 3552x3552 pixels array. This resolution is remarkable considering the compact size and affordability of the camera, and its primary selling point lies in capturing complete sky images, and the square sensor format offers distinct advantages. Unlike traditional rectangular sensors, the square shape simplifies the process of stitching together mosaic images since there are no elongated sides to contend with, meaning every side is equal. Furthermore, this format enhances compatibility with numerous fisheye and wide-angle lenses, expanding the camera's versatility for various astrophotography uses.

Lower Readout and Dark Current with STARVIS 2

The ZWO ASI676MC comes with Sony's flagship STARVIS 2 technology which increases sensitivity beyond what the human eye can see, thus supporting high dynamic range and lower readout and dark current noise. Another benefit is increased sensitivty in the near infrared spectrum, which can be beneficial in all sky observations when trying to get better details of the Milky Way beyond the cosmic dust.

AMP Glow a Thing of the Past

Often with poorly constructed sensor circuitry, amp glow can occur due to imperfections in the sensor. ZWO has ensured that any sensors they use in their cameras, including the ASI676MC IMX676 are free of this issue! This means exposures result with uniform sensor sensitivity with no glow.

USB 3.0 Interface and 256MB DDR3 Memory

The ASI676MC utilizes USB 3.0 interface for stable connection as well as 256MB DDR3 Memory for secure data transfer without interference. This is particularly useful for long exposures since it avoids frame dropping and unwanted glow by slow reading spead.

Quantum Efficiency Peak of 83% and Low Readout Noise

ZWO measurements and tests of the Sony IMX676 sensor resulted in a QE peak of 83%, which is a remarkable level with excellent conversion of photons into electrons, ensuring very little light is lost in the process. On top of this, the readout noise is very low as well, and these two factors combined improve Signal to Noise ratio (SNR) drastically. When adding on the cameras HCG mode, dynamic range stays constant even when high gain is set and automatically will be activated when gain is set to 180. This means readout noise is low as 0.56e and the dynamic range can reach almost as low as 11 stops.

IR Cut Coated Window

The ZWO ASI676MC consists of an 21mm diameter 1.1mm thick IR-cut coated window in the front of the sensor to reduce infrared glare.


Standard two year manufacturer.

More Information
UPC 0748305560286
Brand ZWO
Free Shipping Free Shipping Available
ADC 12 bit
Includes Autoguide Port No
Frames Per Second (FPS) 31.2 fps
Full Well Capacity 10.55Ke
Image Stabilization No
Pixel Array 3552 x 3552
Pixel Size 2 microns
Quantum Efficiency (QE) 83%
Readout Noise 0.56e
Sensor Size 1/1.6" Sony IMX676
Warranty 2 year manufacturer
In The Box
  • ZWO ASI676MC USB 3.0 Color CMOS Camera
  • Cover
  • Quick guide
  • USB 3.0 Cable (2m)
  • ST4 Cable
  • 1.25" Nosepiece
  • ZWO ASI676MC USB 3.0 Color CMOS Camera
  • Cover
  • Quick guide
  • USB 3.0 Cable (2m)
  • ST4 Cable
  • 1.25" Nosepiece
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