We analyzed all images in the Astronomy Photographer of the Year competition to find the best ZWO planetary and deep-sky cameras:
We found that the:
Read on to see our full results analysis, to understand more about the differences between ZWO camera models, and how to choose what is right for you.
Last update on 2022-05-22 / Affiliate links / Images from Amazon Product Advertising API
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Best ZWO Cameras
The Astronomy Photographer of the Year contest is the world’s leading astrophotography competition. Each year hundreds of images are shortlisted along with details of how the picture was captured, including the camera used.
In the past three years, there have been a total of 376 images shortlisted, and from these 165 used dedicated CCD or CMOS astronomy cameras.
From this data, we can see that ZWO is by far the most successful dedicated astronomy camera brand:
Now let’s look at the most successful individual models.
Best ZWO Planetary Camera
In the chart at the top of this article you can see all the ZWO cameras that have been used in shortlisted images for the Astronomy Photographer of the Year competition in the past three years.
But now we can split this data so that we can see the best ZWO cameras for planetary imaging, and then for deep sky imaging.
So firstly, ZWO planetary imaging cameras:
We can see that the ZWO ASI174MM is the top ZWO camera for planetary imaging:
It is an uncooled, monochrome CMOS camera with a 2.3MP resolution and a fast frame rate of 164 fps at full resolution.
The next most successful models are the:
These cameras are both relatively cheap and so make great options for beginners.
Best ZWO DSO Camera
Next, we can look at the ZWO cameras used for imaging deep-sky objects:
We see that the ASI1600MM Pro is by far the most successful ZWO deep-sky camera:
It is a cooled, monochrome CMOS camera with a 16MP resolution and a frame rate of 23 fps.
The second most successful ZWO deep-sky camera is the ZWO ASI6200MM Pro.
This is also a cooled, monochrome model but with an extremely high 64MP resolution.
You may have noted the key differences between what make the best planetary and deep-sky cameras:
- Planetary cameras should have a fast frame rate for lucky imaging and lower resolution for fast data transfer.
- Deep sky cameras need higher resolution for more image detail, but have a slower frame rate since they will be used for longer exposures. They also need cooling to reduce noise.
ASI1600MM Pro vs ASI2600MM Pro
The newer model has:
- A much higher resolution 26MP sensor with a pixel array of 6248×4176
- Back-illumination which reduces noise and amp glow in images
- A built-in dew heater
- Increased bit depth
- Increased full well depth (50ke)
- Increased quantum efficiency (91%)
Therefore for most people, it will likely come down to budget as to which one to go for.
It should also be noted though that its higher resolution and lower frame rate do not make it ideal for lunar or solar imaging and there are better (and cheaper) cameras for this, like the ASI174MM.
You can watch a video that discusses this comparison here:
FAQs: ZWO Cameras
What do the names of ZWO camera models mean?
The naming convention of ZWO cameras is as follows:
- ZWO is the company name
- ASI is the name of the model range
- The number indicates either the resolution (e.g. ASI1600MM Pro = 16MP resolution) or the sensor name (e.g. ASI174MM = Sony IMX174 sensor)
- MM means monochrome / MC means color
- Pro indicates that it is cooled / GT indicates a built-in filter wheel
- ASI174MM = uncooled CMOS monochrome camera with a Sony IMX174 sensor.
- ASI1600MM Pro = cooled CMOS monochrome camera with 16MP resolution
- ASI1600MM GT = cooled CMOS monochrome camera with a built-in filter wheel
How many different ZWO camera models are there?
There are currently 32 different ZWO camera models available:
- ASI071MC Pro
- ASI1600MM Pro
- ASI294MC Pro
- ASI183MC Pro
- ASI183MM Pro
- ASI174MM Mini
- ASI290MM Mini
- ASI533MC Pro
- ASI2600MC Pro
- ASI6200MM Pro
- ASI6200MC Pro
- ASI2400MC Pro
- ASI294MM Pro
- ASI2600MM Pro
Color vs Monochrome ZWO Cameras?
There are a few things to know if considering whether to get a color or mono ZWO camera:
- Color cameras give you a full color image in a single exposure. However, the in-built filtering limits the capacity of the camera’s sensor, resulting in less data captured.
- Monochrome cameras use the full capacity of the sensor to capture light but they need additional filters to create color images. This is more work and costs more to buy the additional components, including a filter wheel.
Using a monochrome camera is more difficult and expensive, but has a much higher potential for producing images.
Color cameras are much quicker and simpler, but the images produced will be more limited. This can be perfect for beginners though who are looking to do their first imaging with a dedicated astronomy camera.
What telescopes are used with ZWO cameras?
Our results show that planetary imaging with ZWO cameras is most commonly done with telescopes from:
The most successful models are Celestron Schmidt-Cassegrain OTAs, with the highest being:
For deep sky imaging with ZWO cameras, we see the most successful telescope brands to be:
- Takahashi (32%)
- Celestron (23%)
- Sky-Watcher (18%)
The most successful models are:
- Sky-Watcher Skyliner 200P (18%)
- Celestron C9.25 (9%)
- Celestron RASA 8 (9%)
- Takahashi FSQ-106 ED (9%)
- Takahashi FSQ-85 EDP (9%)
- Takahashi TOA 130NS (9%)
For more insight, see the Best Telescopes for Astrophotography.
Where are ZWO cameras made?
ZWO are based in China. Specifically the city of Suzhou in Jiangsu province.
Where can I get ZWO camera drivers?
All drivers for ZWO cameras can be downloaded from the ZWO website.
ZWO vs QHY?
Our results indicate that ZWO outperforms all other manufacturers of CCD and CMOS cameras.
However, these results should take into context price and availability, since a budget ZWO camera of a few hundred dollars will likely not be “better” than a premium QHY CCD model of a few thousand dollars, but a lot more people will own the ZWO model and so there will be more images produced with that camera.
What’s the best ZWO camera for EAA?
The ASI178MC is the best ZWO camera for EAA (Electronically Assisted Astronomy).
This is because:
- It is color
- Has a fast frame rate
- Is relatively cheap
If you want to read more about this, see our guide to Electronically Assisted Astronomy.
What are the other good astronomy cameras?
If you want to consider more than just ZWO cameras, then see our articles:
If you want to find out about DSLR and mirrorless cameras for astrophotography, then see the Best DSLR and Mirrorless Cameras for Astrophotography.
Conclusion: Best ZWO Cameras
Overall, based on our findings we recommend for ZWO planetary cameras:
- The ZWO ASI174MM is the most successful overall
- The ZWO ASI290MM is a great budget option
- The ZWO ASI178MC is a great budget color option
For ZWO DSO cameras, we recommend:
- The ZWO ASI160MM Pro as the most successful overall
- The ASI2600MM Pro as a higher-spec alterative
- The ZWO ASI6200MM Pro best premium option
Please let us know if you have any comments or questions in the comments below.