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ZWO ASI294MC Pro Cooled Color CMOS Astrophotography Camera


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  • Perfect for deep space astrophotography and planetary imaging!
  • 11 MP micro four-thirds sensor.
  • High conversion gain boosts sensitivity without losing dynamic range.
  • Thermoelectric cooling down to minus 35 degrees Celsius below ambient.
  • Shoots 4k video at 24 FPS and 320 x 240 at 179.3 FPS.

Product Details

  • Versatile | Compact | Exceptional Image Quality

    The ASI294MC Pro is a micro four-thirds camera packed with features that help you produce world-class images.

    • The first image sensor to take on the four-thirds format providing the necessary amount of pixels for better images.
    • Low-illumination performance from its large optical system makes it ideal for astrophotography.
    • Minimize your camera's amp-glow with improved and reliable data transfer using the DDR memory buffer.
    • Achieve a high signal-to-noise ratio with just one single exposure!
    With exceptional noise reduction technology and video capabilities, the 294 Pro is ideal for photographing: Nebulae, galaxies, planets, solar images,  lunar images, and more.

    Sony IMX294CJK HCG Mode

    Reduce your camera's read noise levels to lower settings at higher gain without loss to the dynamic range when in HCG Mode. Its automatically enabled when the gain setting is 120 or higher. See your camera's read noise drop under 2 electrons, while the dynamic range will remain at 13 stops!

    Read Noise and Dynamic Range

    ZWO ASI Short Back Focus 

    Most Adaptable Camera Body

    Like most ZWO cooled cameras, this 294 Pro body has a short back focus of 6.5 mm. This makes it very easy to adapt to almost any telescope system. Especially telescopes or reducers where back focus is very scarce.

  • specifications

    ADC14 bit
    Back Focus6.5 mm
    Camera ConnectionMale M42x0.75
    Color or MonoColor
    Delta T35C
    Free ShippingYes
    Full Rez Frame Rate19fps
    Full Well63.7ke
    Max Frame Rate179.3fps
    Mega Pixels11.7 mp
    Peak QE75%
    Pixel Array4144 x 2822
    Pixel Size4.63 microns
    Read Noise7.5e
    Sensor Diagonal21.6 mm
    Sensor TypeCMOS
    sensor4/3" Sony IMX294 CMOS
    Weight0.9 lbs
  • included items

Product Reviews

Customer Reviews
4.6 Based on 11 Reviews
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  • Orion Neubla
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Impressive Cam for the price

Purchased this recently along with my very first actual attempt at digital astrophotography. With no experience and lack of a better word of nasty light polluted sky. The result of M31 was a major surprise for me as a first time trying it. This encourages me to try even more and more now. Good product.

William T.
United States United States
Glad I bought it

Man this camera takes great picture. Never done this astrophotography before but my first target was the Orion Neubla and it amazing.

OPT Telescopes ZWO ASI294MC Pro Cooled Color CMOS Astrophotography Camera Review
Australia Australia
Long term project

Getting the best out of this camera is going to take some time due to the need to master its many controls and features. But initial impression is very favourable.

Michael P.
United States United States
Simply Amazed....

I've been shooting with an unmodified DSLR for the last several years and I felt that I was at the point were it was holding me back in my astrophotography. I got great advice from the folks at OPT and I have to say I am thrilled! I don’t know why I waited so long to move to a dedicated astro camera. Of course the weather has been horrible for a month after delivery. I had my first opportunity to try it this past weekend. Using NINA capture software..everything connected flawlessly, the included manual was “Spot-on” re: spacers needed to get correct backfocus, and setup. When my first sub downloaded of the Pelican Nebula, I was thrilled to see “red” Ha data for the first time imaging.. very low noise. Honestly, I think I was most excited not to be taking dark frames at 2am... Thanks OPT for the great advice.

Frank R.
United States United States
Strange artifacts

I wanted to love this camera—it’s fast, sensitive and creates great images. But with a light pollution filter like the Hutech IDAS-LPS P2 or D2, or the Triad Ultra Quad band filter, it creates weird red and green streaks and blotches in the background that are hard to get rid of—or cause you to lose nebulosity when you do. It took me a long time to figure out it was the filters, and maybe it isn’t—there are lots of posts on the internet about similar problems. Check around and see what other people are saying, but if you’re in a light polluted area where you’ll be needing a filter, you might want to look elsewhere. I returned mine and am awaiting an ASI2600.

Paul G.
United States United States
A new frontier

This is my first cooled camera. Wow!!!! Because of stormy weather I have only been able to use it once. But what a night it was. My target was the Sunflower Galaxy. Cooled to -10 and away we went. Super sensitive and no noise. I shot a darks library to get the ball rolling.