ZWO ASI290 MINI monochrome USB 2.0 guide camera


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This is ZWO’s first mini camera. This camera integrates a Sony IMX290 1/3″ sensor, and has 1936 x 1096 pixels. This camera provides 12bit ADC and its QE peak is over 80%.


Sensor: 1/2.8″ CMOS IMX290/IMX291
Resolution: 2.1Mega Pixels 1936×1096
Pixel Size: 2.9µm
Exposure Range: 32µs-2000s
ROI: Supported
Non-volatile memory/On camera storage: Build-in total 192K byte user-accessible space(image size up to 480X320)
Interface: USB3.0/USB2.0
ST4 Guider Port: Yes
Focus Distance to Sensor: 8.5mm
Shutter Type: Rolling Shutter
Protect window: AR coated window
Operating System Compatibility: Mac, Windows, Linux
Interface: USB2.0
Bit rate: 12bit output(12bit ADC)
Adaptor:1.25″ / M28.5X0.6
Dimension: φ36mm X 61mm
Weight: 60g or 3.1 ounces (without lens)
Working Temperature: -5°C—45°C
Storage Temperature: -20°C—60°C
Working Relative Humidity: 20%—80%
Storage Relative Humidity: 20%—95%

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The ZWO ASI290MM Mini Camera is an excellent choice for astrophotographers looking for a lighter, lower profile camera.


Astrophotography Performance

The ZWO ASI290MM Mini camera offers very good performance for planetary imaging and guiding. It features low read noise, high dynamic range, QE peak >80%, AR protective window and much more.


USB2.0 & ST4 Port

USB 2.0 Port: Mini camera has one USB2.0 type C port. Type C port is very popular in mobile phones, it will not care about positive side and negative side of the adapter.

ST4 Port: Can connect mini camera direct connect to auto guide port of mount.


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To see graphs on the performance or to download the drivers for the camera head over to


Weight 2 lbs
Dimensions 6 × 6 × 4 in

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