ZWO ASI294MM
ZWO
ZWO ASI294MM is a Micro Four Thirds monochrome astronomy camera for LRGB and narrowband deep-sky imaging.
Best Current Offer
Specifications
Sensor
- Sensor model
- Sony IMX492 CMOS
- Color / mono
- Monochrome
- Sensor size
- 4/3-inch format
- Megapixels
- 11.69 MP
- Resolution
- 4144 x 2822 / unlocked 8288 x 5644
- Pixel size
- 2.315 µm unlocked / 4.63 µm binned
- ADC
- 14-bit
- Read noise
- 1.2e
- Full well
- ~63.7 ke binned
- Peak QE
- ~75%
Mechanical
- Interface
- USB 3.0
Astrophotography Fit
A monochrome camera best used where its sensor size and workflow match the telescope and calibration plan.
ZWO ASI294MM is a premium monochrome camera aimed at LRGB and narrowband deep-sky imaging.
As a mono camera, it becomes a system only after you add a filter wheel, LRGB filters, and narrowband filters. The payoff is stronger control over signal, star color, and emission-line contrast, but the setup asks for calibration discipline.
Match the camera to the telescope before buying: sensor size controls framing, pixel size controls sampling, and cooling only pays off when you also shoot darks and flats. If the scope cannot illuminate the sensor cleanly, a smaller camera can produce better data than a bigger one.
Best paired with
- Electronic filter wheel sized for the sensor and back-focus budget
- LRGB plus Ha, OIII, and SII filters matched to the sky conditions
- Guided refractors or corrected astrographs with a clean calibration-frame library
Not recommended for
- First-time imagers who want a simple one-shot color workflow
- Rigs without budget or back focus for a filter wheel and filters
- Casual sessions where darks, flats, and repeatable gain settings are unlikely
Community Images
Astrophotography examples from Flickr.
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| ZWO USA ZWO USA | $1,152.00 | In stock Updated 8/5/2026 | View Offer - $1,152.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.