ZWO ASI990MM Pro USB3.0 Monochrome SWIR Camera

ZWO ASI990MM Pro SWIR Cooled Monochrome Camera for Scientific Imaging

The ZWO ASI990MM Pro is a state-of-the-art cooled short wavelength infrared (SWIR) camera, equipped with the Sony IMX990 InGaAs sensor. With a 1.3MP resolution, square 5µm pixels, and high sensitivity across a broad waveband (0.4–1.7µm), this camera is built to deliver clear and precise imaging in scientific, photometric, and SWIR astronomy applications.

The advanced design of the IMX990 sensor integrates Sony’s unique Cu-Cu interconnect technology, which reduces fixed pattern noise and ensures minimal pixel defects. The ASI990MM Pro achieves an impressive 80% quantum efficiency at 1200nm, making it particularly effective for capturing short wavelength infrared details. Additionally, the two-stage TEC cooling system keeps the sensor 35°C below ambient temperature, enhancing image quality and reducing dark current noise, essential for extended exposure SWIR applications.

For astrophotography enthusiasts and professionals, the ASI990MM Pro enables daytime star observation and high-definition night sky imaging, even in challenging conditions like thin clouds or fog. This camera’s high full well capacity of 166,000 e- and zero amp glow circuitry ensure it can capture clean, high-contrast images without interference, even under long exposures.

Key Features:

Sensor: Sony IMX990 InGaAs SWIR sensor

Resolution: 1.3MP (1280 x 1024)

Pixel Size: 5.0µm

Waveband Sensitivity: 0.4 to 1.7µm

Quantum Efficiency: Over 80% at 1200nm

Read Noise: 21.27 e- (low gain)

Full Well Capacity: 166,000 e-

TEC Cooling: ΔT of 35°C below ambient

Frame Rate: 31.9 fps at full resolution

Shutter Type: Electronic global shutter

Back Focus: 6.5mm; 17.5mm with T2 extension

Ports: USB 3.0, dual USB 2.0 hub

Dimensions: M42 x 0.75 connection

Applications: Ideal for SWIR astronomy, photometry, optical communication, and lab-based optics research. Its wideband sensitivity allows you to capture stars in daylight, penetrate clouds, and perform precise measurements in a range of scientific fields.

The ZWO ASI990MM Pro combines high sensitivity, extensive waveband coverage, and advanced cooling, making it a powerful tool for both professional astronomers and researchers seeking detailed infrared imaging.