ZWO ASI990MM Pro Monochrome SWIR Camera
A scientific‑grade, cooled short‑wave infrared (SWIR) camera built around Sony’s IMX990 InGaAs sensor. With 1.3 MP global‑shutter resolution, 5 µm pixels and dual‑stage TEC cooling, ASI990MM Pro delivers exceptionally clean SWIR imaging for research, lab, and specialist astrophotography from ~0.4–1.7 µm.
- Sony IMX990 InGaAs – 1280 × 1024, 1.31 MP, 5 µm square pixels, global shutter.
- High sensitivity – QE peak ≈ 80% @ 1200 nm and broad VIS‑SWIR response (≈400–1700 nm).
- Clean data – dual‑stage TEC cooling (ΔT ≈ 35 °C), low read noise (~21.3 e‑), amp‑glow suppression, 256 MB DDR3 buffer.
- Up to ~32 fps full‑frame; ideal for lab capture, spectroscopy assistance, EAA/SWIR experiments.
- M42×0.75 front thread, 6.5 mm native backfocus or 17.5 mm with included 11 mm T2 extender for flexible integration.
Why choose ASI990MM Pro
Compared with conventional CMOS astronomy cameras, the SenSWIR IMX990 sensor captures beyond the visible into SWIR, revealing features obscured by dust and enabling specialist measurements. The global shutter keeps stars and targets geometrically true, while deep cooling and the onboard buffer maintain clean, reliable data over long sessions.
Key features
- 1/2″ optical format IMX990 InGaAs SWIR sensor.
- Resolution: 1280 × 1024 (1.31 MP).
- Pixel size: 5.0 × 5.0 µm.
- Global shutter; approx. 31.9 fps at full resolution (USB3).
- Read noise: ~21.27 e‑ (low gain).
- Full‑well capacity: up to ~166,000 e‑.
- Cooling: dual‑stage TEC, ΔT ≈ 35 °C below ambient.
- QE peak ≈ 80% @ 1200 nm; response ≈ 400–1700 nm.
- Interfaces: USB 3.0 (Type‑B), 2× USB 2.0 hub ports.
- On‑camera memory: 256 MB DDR3 buffer.
- Mechanical: M42×0.75 (T2) thread; 6.5 mm / 17.5 mm backfocus options.
Specifications
| Sensor | Sony IMX990 (InGaAs, SenSWIR) |
|---|---|
| Optical format | Type 1/2″ |
| Resolution | 1280 × 1024 (≈1.31 MP) |
| Pixel size | 5.0 µm × 5.0 µm |
| Shutter | Electronic global |
| QE (peak) | ≈80% @ 1200 nm |
| Spectral range | ≈400–1700 nm (VIS‑SWIR) |
| Read noise | ≈21.27 e‑ (low gain) |
| Full‑well | Up to ≈166,000 e‑ |
| Max frame rate | ≈31.9 fps @ full frame |
| ADC | 12‑bit |
| Cooling | Dual‑stage TEC, ΔT ≈ 35 °C below ambient |
| Interface | USB 3.0; 2× USB 2.0 hub |
| Buffer | 256 MB DDR3 |
| Backfocus | 6.5 mm native / 17.5 mm with 11 mm T2 extender |
| Front thread | M42×0.75 (T2) |
| Model / SKU | ASI990MM‑P / ASI990MM‑Pro |
Image gallery
Tip: host images on your own CDN/Shopify Files to avoid hot‑linking.
Drivers & software
Install the latest ZWO ASI Camera Driver and ASIStudio capture suite before first use. Update your acquisition app to the latest version for SWIR support.
Compatibility & mounting
- Standard M42×0.75 front thread for T‑mount adapters and filter drawers.
- Backfocus options: 6.5 mm native / 17.5 mm with supplied 11 mm T2 spacer.
- Works with most capture apps supporting ZWO ASI SDK (Windows/macOS/Linux).