ZWO ASI990MM Pro Cooled Monochrome SWIR Astronomy Camera

Capture night-sky images through thin clouds and photograph stars during the day with the ASI990MM Pro Cooled Monochrome SWIR Astronomy Camera from ZWO. The shortwave infrared sensor captures details in the night sky that are invisible or have limited visibility to traditional CMOS cameras, and it lends itself to photometric measurement, optical communication, and other fields. Equipped with a Sony IMX990 monochrome CMOS sensor, the camera achieves 1280 x 1024 resolution with low read noise and no amp glow. The two-stage thermoelectric cooler lowers the sensor temperature by 95° F below ambient, dramatically reducing dark current noise for a clean image even with very long exposures.

9.1MP Sensor

The ASI990MM Pro features a shortwave infrared Sony CMOS sensor with a resolution of 1280 x 1024. The 5µ pixel accommodates an impressive full well capacity of 127ke. The sensor boasts a quantum efficiency of 80%.

Two-Stage TEC Cooling

The sensor can be cooled to 95° F below the ambient temperature, holding down dark current noise. When the sensor is cooled to 32° F, a 300-second exposure would cause only 0.7e dark current noise in total, even lower than the camera's readout noise.

No Amp Glow

Using zero-glow amp circuitry, the ASI533MC Pro eliminates amp glow— a weak infrared light source often created by traditional CMOS sensors, sometimes seen in the corners of uncalibrated images. You won't have to worry about it, even during high-gain, long-exposure imaging.

USB 3.0 & 512MB DDR3 Memory

The ASI533MC Pro is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3 cache to ensure stable and secure data transmission. Under long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.