Description
ZWO ASI183MM Pro – Product Description
The ZWO ASI183MM Pro is a high-resolution, cooled monochrome camera designed for serious astrophotography. Built around the proven Sony IMX183 sensor, it combines excellent sensitivity, low noise, and fine pixel detail—making it a strong choice for both deep-sky imaging and high-resolution planetary work.
Real-World Performance
What makes this camera stand out is how well its specs translate into actual imaging results.
The 2.4 µm pixel size allows you to capture very fine details, especially when paired with short focal length telescopes or well-corrected optics. This makes it particularly effective for imaging nebula structures, galaxies, and even lunar surface details.
At the same time, the 84% peak quantum efficiency (QE) ensures that most of the incoming light is actually converted into usable signal. In practical terms, that means cleaner images and better results when shooting faint objects like emission nebulae—especially in narrowband filters like Hydrogen-alpha.
Despite the small pixel size, the camera maintains a 15,000 electron full well capacity, helping to control star saturation during long exposures. Combined with low read noise (~1.6e⁻), this gives you flexibility whether you’re stacking many short exposures or going for longer integrations.
Cooling & Noise Control
For deep-sky astrophotography, cooling is critical—and this is where the Pro version makes a big difference.
The built-in two-stage TEC cooling system can reduce the sensor temperature by up to 40–45°C below ambient, dramatically lowering thermal noise. This allows for:
- Cleaner long exposures
- Better calibration with dark frames
- More consistent results across sessions
The addition of a DDR3 memory buffer also improves data transfer stability and helps reduce amp glow, especially when using slower USB connections.
Speed & Versatility
This isn’t just a deep-sky camera—it’s also fast enough for high-speed applications.
With frame rates up to 19 fps at full resolution (and much higher at smaller regions of interest), the camera works well for:
- Lunar and solar imaging
- Planetary imaging (Jupiter, Saturn, Mars)
- Lucky imaging techniques
- Real-time focusing and EAA (Electronically Assisted Astronomy)
Who is this product for?
This camera is ideal for:
- Intermediate to advanced astrophotographers looking for a high-resolution mono camera
- Users interested in deep-sky imaging with filters (LRGB or narrowband)
- Astronomers who want one camera for both deep-sky and planetary work
- Anyone building a serious imaging setup with a cooled sensor
It may not be the best choice for complete beginners, as monochrome imaging requires filters, calibration, and more processing steps.
What’s in the box?
Typically, the package includes:
- ZWO ASI183MM Pro camera body
- USB 3.0 cable
- 2" nosepiece adapter
- T2 (M42) adapter
- Power cable (12V input)
- User manual
(Contents may vary slightly depending on the retailer.)
Final Thoughts
The ZWO ASI183MM Pro offers a strong balance of resolution, sensitivity, and cooling performance. It’s particularly well-suited for astrophotographers who want to push detail and signal quality, especially when working with filters.
If your goal is high-quality deep-sky imaging with flexibility for planetary work, this camera remains a very capable and proven option.
Specifications
| Category | Specification |
|---|---|
| Sensor Type | CMOS (Sony IMX183) |
| Sensor Size | 13.2 × 8.8 mm |
| Sensor Diagonal | 15.9 mm |
| Resolution | 5496 × 3672 pixels |
| Megapixels | 20.18 MP |
| Pixel Size | 2.4 µm |
| Color Type | Monochrome |
| Bit Depth | 12-bit |
| Max Frame Rate | 19 fps (full resolution) |
| Read Noise | 1.6 e⁻ |
| Full Well Capacity | 15,000 e⁻ |
| Minimum Exposure | 32 µs |
| Maximum Exposure | 33.3 minutes |
| Active Cooling | Yes (Two-stage TEC) |
| Cooling Capability | Up to 45°C below ambient |
| Interface | USB 3.0 / USB 2.0 |
| Power Supply | 12V DC |
| Telescope Connection | 1.25", 2", T2 (M42 × 0.75) |
| Back Focus Distance | 6.5 mm |
| Buffer Memory | 256 MB |
| Internal Memory | DDR3 RAM |
| Operating Temperature | -5°C to +45°C |
| Weight | 410 g |
| Diameter | 78 mm |
| Length | 85 mm |
| Filter Wheel | Not included |
| Moon & Planets | Yes |
| Nebulae & Galaxies | Yes |
| Autoguider | No |
| All-Sky / Meteor | No |





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