The ZWO ASI294MM Pro Mono is a powerful monochrome astro camera with the Sony IMX492 sensor, active TEC cooling and high resolution. This versatile camera offers maximum performance in deep-sky photography and is also suitable for planets and moon thanks to its switchable resolution.
The 4.63 µm pixels provide high sensitivity at short exposure times. In “unlocked mode,” the resolution can be doubled to 2.32 µm pixels, ideal for detail-rich shots at short focal lengths.
Key features
- Sony IMX492 sensor (11.6 MP mono) - 4.63 µm pixels, optional 2.32 µm in unlocked mode
- QE to 90% - extremely high sensitivity for faint objects
- Active TEC cooling down to -35 °C below ambient temperature
- 512 MB DDR3 buffer - stable data transfer via USB 3.0 and USB 2.0
- 14-bit ADC - Smooth tone transitions and precise signal registration
- HCG Mode - readout noise <2 e- at higher gain
Applications
✓ Deep-sky photography (nebulae, galaxies) with high signal-to-noise ratio
✓ Moon and planet shots with short exposure times
✓ Lucky imaging and video astronomy
✓ High resolution possible in unlocked binning mode
Specifications
| Feature | Value |
|---|---|
| Sensor | Sony IMX492 CMOS (Mono) |
| Resolution | 4144 × 2822 (11.6 MP) - up to 8288 × 5644 in unlocked mode |
| Pixel size | 4.63 µm / 2.32 µm |
| Sensor format | 19.1 × 13.0 mm |
| Diagonal | 23.1 mm |
| Bit depth | 14-bit |
| Full Well Capacity | 66.000 e- |
| Reading Noise | 1,26 - 8 e- |
| FPS | 16.3 (at full resolution) |
| Interfaces | USB 3.0, USB 2.0 |
| Buffer Memory | 256 MB DDR3 RAM |
| Cooling | Yes, up to -35 °C |
| Telescope connection | 1,25″, 2″ & T2 |
| Flange spacing | 6.5 mm / 17.5 mm |
| Weight | 410 g |
| Dimensions | Ø78 mm × 85 mm |
Additional info
✓ Includes clear AR glass filter - IR-cut filter optional when used with achromats
✓ Robust build quality and high software compatibility
✓ Ideal for narrowband shooting with long integration times
Note
A 12 V power supply is required for correct operation - even when the cooling system is not in use.
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