ZWO ASI992MM Pro SWIR The ASI992MM Pro is a cooled monochrome short-wave infrared camera using Sony’s InGaAs IMX992 sensor. Its 0.4–1.7 µm spectral range extends beyond ordinary visible-light astronomy cameras into SWIR.
Manufacturer model: ZWO ASI992MM Pro SWIR · Specifications checked against manufacturer data on 2026-11-03
The ASI992MM Pro is a cooled monochrome short-wave infrared camera using Sony’s InGaAs IMX992 sensor. Its 0.4–1.7 µm spectral range extends beyond ordinary visible-light astronomy cameras into SWIR.
Sensor and sensitivity
The 8.942 × 7.093 mm sensor records 2592 × 2056 pixels with 3.45 µm pixels and a 12-bit ADC. ZWO lists 62.8 ke full well, 71-electron read noise, up to 70 fps and estimated peak QE above 80% at 1200 nm. These are ASI992 figures, distinct from the lower-resolution ASI990 and ASI991 models.
Cooling and transfer
Two-stage TEC cooling is specified at 35–40 °C below ambient in ZWO’s 30 °C test conditions. Zero amp-glow circuitry, a 256 MB DDR3 buffer and USB 3.0 connection support image capture.
Power and optical connection
Use a 12 V DC, 3–5 A supply with a 5.5 × 2.1 mm centre-positive connector, or an 11–14 V battery. The M42 × 0.75 connection provides 6.5 mm bare sensor spacing, or 17.5 mm with the 11 mm ring. Select optics and filters with transmission appropriate to the intended SWIR wavelength range.
Use the exact named-model manufacturer connection and operating instructions linked with this product. Optional parts and adapters require their specified spacing and power limits.
Additional specifications
Spectral range
0.4–1.7 µm
87829
Data sheet
ADC (bits)
12
Amp glow
Zero amp glow
Battery voltage range
11–14 V
Buffer
256 MB DDR3
Camera thread
M42 × 0.75
Colour mode
Monochrome
Cooling
Two-stage TEC; 35–40 °C below ambient, tested at 30 °C ambient
Full well (e⁻)
62800
Interface
USB 3.0; USB 2.0 hub
Maximum frame rate
70 fps advertised maximum
Peak QE
Over 80% at 1200 nm (manufacturer estimate)
Pixel size (µm)
3.45
Power supply
12 V DC, 3–5 A; 5.5 × 2.1 mm centre positive
Read noise (e⁻)
71
Resolution (px)
2592 × 2056
Sensor
Sony IMX992 InGaAs
Sensor backfocus
6.5 mm bare; 17.5 mm with 11 mm ring
Sensor dimensions (mm)
8.942 × 7.093
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ZWO ASI992MM Pro SWIR The ASI992MM Pro is a cooled monochrome short-wave infrared camera using Sony’s InGaAs IMX992 sensor. Its 0.4–1.7 µm spectral range extends beyond ordinary visible-light astronomy cameras into SWIR.
Manufacturer model: ZWO ASI992MM Pro SWIR · Specifications checked against manufacturer data on 2026-11-03
