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 for deep-sky photography and is also suitable for planets and moon thanks to its switchable resolution.
The 4.63 µm pixels ensure high sensitivity at short exposure times. In “unlocked mode”, the resolution can be doubled to 2.32 µm pixels, ideal for detailed images with short focal lengths.
Key Features
- Sony IMX492 sensor (11.6 MP mono) – 4.63 µm pixels, optional 2.32 µm in unlocked mode
- QE up 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 tonal transitions and precise signal recording
- HCG mode – read noise <2 e⁻ at higher gain
Applications
✓ Deep-sky photography (nebulae, galaxies) with high signal-to-noise ratio
✓ Moon and planetary imaging with short exposure times
✓ Lucky imaging and video astronomy
✓ High resolution possible in unlocked binning mode
Specifications
| Property | 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⁻ |
| Read 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, down to -35°C |
| Telescope connection | 1.25 “, 2” T2 |
| Back focus distance | 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 using with achromats
✓ Robust build quality and high software compatibility
✓ Ideal for narrowband imaging with long integration times
Please Note
A 12V power supply is required for proper operation – even when cooling is not used.
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