
ZWO ASI585MC Air Wireless Smart Colour Astronomy Camera
The ZWO ASI585MC Air is a new smart colour camera from ZWO with built-in guiding, deep-sky capture, and streamlined control of your astrophotography setup.
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ASI585MC Air: ZWO’s All-in-One Smart Deep-Sky Imaging Powerhouse
The ASI585MC Air is ZWO’s latest ultra-sensitive wireless astrophotography camera, combining a high-performance deep-sky imaging sensor, an onboard guiding sensor, and an integrated control system powered by ASIAIR technology. This compact all-in-one design streamlines your setup and makes deep-sky imaging easier than ever.
Main Camera
Guide Camera
10 Key Advantages of the ASI585MC Air
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Triple Functionality – Combines imaging, guiding, and control in a single compact device.
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256GB Built-in eMMC Storage – Fast and reliable onboard storage with ample space.
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STARVIS 2 CMOS Sensor – Enhanced sensitivity with ultra-low light performance.
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4K Resolution Output – Crisp, high-definition imaging for deep-sky targets.
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Comprehensive Interface Options – 1× USB-C, 4× USB 2.0, 2× 12V 10A DC ports.
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Dual-Band Wireless + Bluetooth – Seamless 2.4GHz/5GHz Wi-Fi and Bluetooth connectivity.
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Intelligent Live Stacking – Real-time stacking and previewing during captures.
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High SNR & Sensitivity – Excellent signal-to-noise ratio ensures cleaner data.
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Voice Prompts – Hands-free audio status updates during imaging sessions.
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Full Rig Control via Mobile or PC – Complete system access through app or software.
Simplified Setup, Powerful Imaging
ZWO’s integrated "Dual Sensor + ASIAIR" platform eliminates the complexity of traditional astrophotography setups. With the ASI585MC Air, you're ready to start imaging in minutes—no separate guiding or control units required.
Seamless Device Connectivity
Equipped with 4× USB 2.0 ports for accessories like focusers, filter wheels, or mounts; 2× 12V 10A ports to power your gear; and a USB-C port for high-speed data transfer. This camera serves as a control hub for your entire imaging setup—no tangled mess, no headaches.
Generous Internal Storage
With 256GB of onboard eMMC storage, you can image multiple targets without running out of space. It's stress-tested with over 300 benchmarks for long-term stability. Need more room? Connect external storage up to 1TB via USB.
STARVIS 2 CMOS Sensor with 4K Imaging
The ASI585MC Air features the Sony STARVIS 2 sensor, offering a higher dynamic range and improved low-light performance. This advanced tech delivers sharp, detailed 4K images—even under challenging night sky conditions.
Zero Amp Glow for Cleaner Images
This camera eliminates amp glow at the hardware level, resulting in exceptionally clean dark frames - regardless of gain or exposure length.
The result: uncompromised image quality with no need for software-based amp glow correction.
Strong, Stable Wi-Fi with Dual-Band Antenna
The ASI585MC Air features a detachable external antenna supporting both 2.4GHz (longer range) and 5GHz (faster speed) networks. It maintains a strong, stable signal up to 20 metres in open conditions, ideal for remote or mobile setups.
Cross-Platform Compatibility
Beyond the ASIAIR mobile app, the ASI585MC Air also works with ZWO's ASIStudio software and third-party applications through ASCOM/Alpaca (ASCOM Platform v6.6 or later). This gives users flexibility to image via PC, tablet, or smartphone.
Total Control, Right From Your Phone
ZWO’s patented technologies allow you to run your entire imaging session directly from your smartphone. With support for OTA firmware updates, the ASI585MC Air constantly evolves—adding new features and improvements over time.
Real-Time Stacking & Instant Sharing
Live stacking is built in. Adjust exposure, contrast, and other image settings on the fly, then quickly share your results to social media or astronomy forums. It’s a streamlined workflow designed to keep you shooting and sharing with ease.
Built-in HCG Mode for Better Performance
The High Conversion Gain (HCG) mode automatically activates at gain 252, significantly lowering read noise to just 0.7e while preserving dynamic range near 12 bits. This makes it easier to capture both faint nebulosity and brighter stars in the same frame.
Peak Quantum Efficiency of 91%
Lab testing shows the ASI585MC Air achieves a peak QE of 91%, making it one of the most sensitive colour cameras in ZWO’s line-up—ideal for capturing detailed deep-sky images across a wide spectrum.
Two-Stage Cooled Sensor
Its dual-stage TEC cooling system can drop the sensor temperature by up to 30–35°C below ambient. This dramatically reduces thermal noise and dark current, especially during long exposures—perfect for high-contrast deep-space imaging.
Power Consumption
IR-Cut Coating for OSC Camera
Frame Rate

Product Specifications
Camera Specifications
Telescope Connections
Mechanical Diagram
Recommended Accessories
About ZWO Optical
Astrophotography has never been easier.
Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou China. They focus on building and innovating ground-breaking CMOS cameras such as the iconic ZWO ASI120MM Monochrome CMOS camera (the first-ever planetary CMOS camera to beat a CCD in the early 2010s). ZWO continues to pioneer new astrophotography technology with revolutionary features to capture exceptional quality of images of space that will last you a lifetime. Today, ZWO cameras are recognised by every passionate astrophotographer and are available in over 25 countries internationally.
Product Code: ZWO-ASI585MC-Air
Product Flag | New |
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Colour / Monochrome | Colour |
Sensor Type | IMX585 |
Sensor Size | 1/1.2" 11.2x6.3mm |
Resolution | 3840x2160 |
Pixel Size | 2.9µm |
ADC | 12 bit |
Read Noise | 0.7e-6.67e- |
USB | USB 3.0 and USB2.0 |
FPS | 10fps (1920x1080) |
Shutter | Rolling Shutter |
QE Peak | <91% |
Full Well | 40Ke- |
Back Focus | 12.5mm or 17.5mm |
Power | 12V 5A |
Operating System Compatibility | Windows, Mac OSX, Linux |
Cooling Temperature | -35C |
Cooled? | Yes |
Usage | Guiding, Deep Sky Imaging |
Camera Weight | 635g |
Warranty Information | 2 years |
Image | Item | Qty |
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Camera Body and Camera Bag |
1 |
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DC 1.5m Male-Female Extension Cable | 1 |
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DC 1m Cable | 1 |
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USB2.0 Cables | 2 |
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T2 extender (21mm) | 1 |
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T2-M48 Extender | 1 |
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M42-M48 Adapter | 1 |
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1m Hook and Loop | 1 |
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Quick Guide | 1 |
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2mm M2.5 Hex Wrench | 1 |
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External Antenna | 1 |
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Packing list | 1 |
Q1. What is the standard backfocus distance for ZWO cameras?
All ZWO cameras have a standard backfocus of 55mm. This matches the optical design of most flatteners and reducers. Always check your reducer/flattener manual to confirm the required distance.
Q2. How do I achieve 55mm backfocus with a ZWO cooled camera?
Start with the camera sensor to flange distance, typically 17.5mm, then add spacers and accessories to reach 55mm total. For example: 17.5mm (camera), 21mm (M42 extension ring) or filter drawer, 16.5mm (M42-M48 adapter or OAG). This gives a total of 55mm.
Q3. How do I calculate backfocus when using a ZWO filter wheel?
ZWO’s 5 Position 1.25"/31mm/36mm filter wheels and filter drawers add 20mm-21mm of backfocus.
For a typical setup: 17.5mm (camera), 20mm (filter wheel), 16.5mm (M42 extension or adapter) for a Total = 54–55mm.
Q4. How do I set backfocus when using a ZWO OAG (Off-Axis Guider)?
The ZWO OAG adds about 16.5mm of backfocus. A sample setup might look like: 17.5mm (camera) + 16.5mm (OAG) +21mm (extension ring) Total = 55mm.
Note: The OAG prism needs to be aligned with the sensor for proper guiding.
Q5. How do filters affect backfocus with ZWO cameras?
Filters, especially in a filter drawer or wheel, shift focus slightly—typically 1/3 the thickness of the filter. For a 2mm thick filter, this means reducing the backfocus by about 0.66mm. ZWO already accounts for this in their 55mm recommendation, assuming standard filters are used.
Q6. What if my stars look distorted at the edges—could it be a backfocus issue?
Yes, coma, elongated stars, or blurry edges are common signs of incorrect backfocus. Double-check each spacer’s thickness, make sure components are properly threaded, and measure the total optical path to ensure it equals the required backfocus.
Q7. Do ZWO planetary and guide cameras require a backfocus setup?
No, uncooled ZWO planetary or guide cameras (e.g. ASI178MM, ASI662MC, ASI174MM Mini) are usually connected directly via 1.25" nosepiece and don’t require backfocus spacing unless used with optics (e.g. OAG or Barlow). They are focused by adjusting position in the focuser or OAG helical focuser.
Q8. What software can I use with my ASI camera?
The ASI Caemra range is compatible with a wide range of astrophotography software. You can use:
ZWO ASIAIR for a mobile-friendly, all-in-one imaging solution (requires ASIAIR Plus sold separtely), ZWO’s native Windows/Mac drivers with ASIStudio, third-party software such as NINA, SharpCap, APT, Sequence Generator Pro, and FireCapture, using ZWO’s ASCOM and native SDK drivers.
Make sure your software is updated to the latest version to ensure full support for this full-frame camera.
Q9. Does the ZWO ASI Cameras work with ASIAIR?
Yes, ASI cameras is fully supported by ASIAIR. You can control cooling (for cooled cameras), gain, offset, exposures, filters (if connected via EFW), and guiding through the ASIAIR mobile app. Be sure to keep ASIAIR firmware and the app itself updated for best compatibility.
Q10. What is the recommended gain and offset setting for the ASI cooled cameras?
This varies by target and sky conditions, but ZWO recommends:
Gain 100 for optimal dynamic range and low read noise
Gain 0 for maximum dynamic range in bright targets or longer exposures
Offset typically ranges from 30–50 but should be adjusted depending on your software and histogram.
Q11. Can I use my ASI Camera with a DSLR lens?
Yes, you may be able to use your ASI Camera with DSLR lenses using appropriate ZWO lens adapters (e.g. M54 to Canon EF/Nikon F). You will need to ensure proper backfocus and may need a manual or electronic lens controller for aperture/focus adjustments.
Q12. My software doesn't recognise my camera – what should I do?
Try the following:
- Install the latest ZWO native and ASCOM drivers.
- Check your USB 3.0 cable and port; use a powered hub if needed.
- Test connectivity with an alternative app like ASIStudio.
- Update your software or firmware (e.g. ASIAIR, NINA).