ZWO ASI992MM Pro — SWIR Cooled Monochrome Camera
The ZWO ASI992MM Pro is a Short-Wave Infrared (SWIR) cooled camera built on the Sony IMX992 InGaAs sensor. With high quantum efficiency across 0.4–1.7 μm, low read noise and dual-stage TEC cooling, it excels in astronomy, photonics research and industrial inspection.
Key Features
- Sensor: Sony IMX992 InGaAs CMOS (1/4″, 8.94 × 7.09 mm)
- Resolution: 2592 × 2056
- Pixel Size: 3.45 μm
- ADC: 12-bit output
- Read Noise: as low as 71 e⁻
- Full Well Capacity: 62.8 ke⁻
- Quantum Efficiency (QE): > 80% peak around 1200 nm
- Frame Rate: up to 70 fps
- Cooling: 2-stage TEC, ΔT ≈ 35–40 °C below ambient
- Buffer: 256 MB DDR3 for stable transfers
- Interface: USB 3.0
- Zero Amp Glow: clean long-exposure performance
Why Choose ASI992MM Pro?
- Outstanding SWIR sensitivity from visible to 1.7 μm for faint-signal work.
- Ultra-low noise architecture + DDR3 buffer = smooth, reliable data capture.
- Deep cooling dramatically reduces dark current for long integrations.
Typical Applications
- SWIR & NIR imaging for astronomy and spectroscopy
- Daytime star detection, thin-cloud/ haze penetration
- Industrial/ lab inspection, photometric measurement
- Optical communication and laser monitoring
Technical Specifications
| Sensor | Sony IMX992 InGaAs CMOS |
|---|---|
| Sensor Size | 1/4″ (8.94 × 7.09 mm) |
| Resolution | 2592 × 2056 |
| Pixel Size | 3.45 μm |
| ADC | 12-bit |
| Read Noise | ~71 e⁻ |
| Full Well | 62.8 ke⁻ |
| QE Peak | > 80% @ ~1200 nm |
| Max Frame Rate | 70 fps |
| Cooling | Two-Stage TEC, ΔT ≈ 35–40 °C |
| Buffer | 256 MB DDR3 |
| Interface | USB 3.0 |
Power & Compatibility
Requires an external 12 V DC (3–5 A) supply (5.5 × 2.1 mm, center-positive) or an 11–14 V lithium battery. Using power sources outside this range may damage the camera.
Note: Specifications and claims (read noise, QE, cooling delta, etc.) are based on manufacturer data and internal testing.
